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This section includes InterviewSolutions, each offering curated multiple-choice questions to sharpen your Class 11 knowledge and support exam preparation. Choose a topic below to get started.
| 39251. |
Dynamic lift due to spinning is |
| Answer» <html><body><p><a href="https://interviewquestions.tuteehub.com/tag/magnus-551234" style="font-weight:bold;" target="_blank" title="Click to know more about MAGNUS">MAGNUS</a> effect<br/>Doppler effect<br/>Pascal effect<br/>Torricelli's effect</p>Answer :A</body></html> | |
| 39252. |
What is the meaning of angular diameter of the Moon ? |
| Answer» <html><body><p></p>Solution :From a point on the surface of the Earth, angle <a href="https://interviewquestions.tuteehub.com/tag/subtended-7715899" style="font-weight:bold;" target="_blank" title="Click to know more about SUBTENDED">SUBTENDED</a> at <a href="https://interviewquestions.tuteehub.com/tag/end-971042" style="font-weight:bold;" target="_blank" title="Click to know more about END">END</a> point of <a href="https://interviewquestions.tuteehub.com/tag/diameter-950836" style="font-weight:bold;" target="_blank" title="Click to know more about DIAMETER">DIAMETER</a> of the Earth is called <a href="https://interviewquestions.tuteehub.com/tag/angular-11524" style="font-weight:bold;" target="_blank" title="Click to know more about ANGULAR">ANGULAR</a> diameter of the Moon.</body></html> | |
| 39253. |
A steel drill is making 180 revolutions per minute, under a constant torque of 5 N-m. If it drills a hole in 7s. in a steel block of mass 600 gm, rise in temperature of the block is (s = 0.1 cal//gml//^(@)C) |
| Answer» <html><body><p> `2.6^@<a href="https://interviewquestions.tuteehub.com/tag/c-7168" style="font-weight:bold;" target="_blank" title="Click to know more about C">C</a>` <br/>`1.<a href="https://interviewquestions.tuteehub.com/tag/3-301577" style="font-weight:bold;" target="_blank" title="Click to know more about 3">3</a>^@C` <br/>`5.2^@C` <br/>`3^@C` </p><a href="https://interviewquestions.tuteehub.com/tag/answer-15557" style="font-weight:bold;" target="_blank" title="Click to know more about ANSWER">ANSWER</a> :A</body></html> | |
| 39254. |
A wooden block of mass M resting on a rough horizontal surface is pulled with a force T at an angle q to the horizontal. If m is coefficient of kinetic friction between the block and the surface, the acceleration of the block is |
| Answer» <html><body><p>`(T <a href="https://interviewquestions.tuteehub.com/tag/cos-935872" style="font-weight:bold;" target="_blank" title="Click to know more about COS">COS</a> <a href="https://interviewquestions.tuteehub.com/tag/theta-1412757" style="font-weight:bold;" target="_blank" title="Click to know more about THETA">THETA</a>)/(M) - <a href="https://interviewquestions.tuteehub.com/tag/mug-549970" style="font-weight:bold;" target="_blank" title="Click to know more about MUG">MUG</a>`<br/>`T/M (cos theta - sin theta) -mug `<br/>`T/M (cos theta - mu sin theta) -mu <a href="https://interviewquestions.tuteehub.com/tag/g-1003017" style="font-weight:bold;" target="_blank" title="Click to know more about G">G</a> ` <br/>`(mu T cos theta)/(M)- mu g ` </p><a href="https://interviewquestions.tuteehub.com/tag/answer-15557" style="font-weight:bold;" target="_blank" title="Click to know more about ANSWER">ANSWER</a> :C</body></html> | |
| 39255. |
A machine delivers power to body which is proportional to instataneous velocity V of the body. If the body starts with a velocity which is almost negligible, then the distance covered by the body is directly proportional to V. Then find the value of n. |
| Answer» <html><body><p>Kinetic energy of the bloci is `(mv^(2))/50`<br/><a href="https://interviewquestions.tuteehub.com/tag/power-2475" style="font-weight:bold;" target="_blank" title="Click to know more about POWER">POWER</a> delivered by th external agent is `(mav)/25`<br/><a href="https://interviewquestions.tuteehub.com/tag/total-711110" style="font-weight:bold;" target="_blank" title="Click to know more about TOTAL">TOTAL</a> power delivered by the string is zero<br/>Work <a href="https://interviewquestions.tuteehub.com/tag/done-2591742" style="font-weight:bold;" target="_blank" title="Click to know more about DONE">DONE</a> by the string on th block is <a href="https://interviewquestions.tuteehub.com/tag/non-580180" style="font-weight:bold;" target="_blank" title="Click to know more about NON">NON</a> zero</p>Answer :A::B::C::D</body></html> | |
| 39256. |
Weight of a body on the surfaces of two planets is the same. If their densities are d_1 and d_2, then the ratio of their radius |
| Answer» <html><body><p>`d_1/d_2`<br/>`d_2/d_1`<br/>`d_1^2/d_2^2`<br/>`d_2^2/d_1^2`</p><a href="https://interviewquestions.tuteehub.com/tag/answer-15557" style="font-weight:bold;" target="_blank" title="Click to know more about ANSWER">ANSWER</a> :<a href="https://interviewquestions.tuteehub.com/tag/b-387190" style="font-weight:bold;" target="_blank" title="Click to know more about B">B</a></body></html> | |
| 39257. |
The ratio of one nanometer to one micron is………. |
| Answer» <html><body><p>`<a href="https://interviewquestions.tuteehub.com/tag/10-261113" style="font-weight:bold;" target="_blank" title="Click to know more about 10">10</a>^(-<a href="https://interviewquestions.tuteehub.com/tag/3-301577" style="font-weight:bold;" target="_blank" title="Click to know more about 3">3</a>)`<br/>`10^(3)`<br/>`10^(-<a href="https://interviewquestions.tuteehub.com/tag/9-340408" style="font-weight:bold;" target="_blank" title="Click to know more about 9">9</a>)`<br/>`10^(-<a href="https://interviewquestions.tuteehub.com/tag/6-327005" style="font-weight:bold;" target="_blank" title="Click to know more about 6">6</a>)`</p><a href="https://interviewquestions.tuteehub.com/tag/solution-25781" style="font-weight:bold;" target="_blank" title="Click to know more about SOLUTION">SOLUTION</a> :`10^(-3)`</body></html> | |
| 39258. |
The terminal velocity of a small ball falling in a viscous liquid depends upon i) its mass m ii) its radius r iii) the coefficient of viscosity of the liquid and iv) acceleration due to gravity. Which of the following relations is dimensionally true for the terminal velocity V = |
| Answer» <html><body><p>`(<a href="https://interviewquestions.tuteehub.com/tag/kmg-3698425" style="font-weight:bold;" target="_blank" title="Click to know more about KMG">KMG</a>)/(<a href="https://interviewquestions.tuteehub.com/tag/etar-3622569" style="font-weight:bold;" target="_blank" title="Click to know more about ETAR">ETAR</a>)`<br/>`(Kmgr)/(<a href="https://interviewquestions.tuteehub.com/tag/eta-446786" style="font-weight:bold;" target="_blank" title="Click to know more about ETA">ETA</a>)`<br/>`(Kmgeta)/(<a href="https://interviewquestions.tuteehub.com/tag/r-611811" style="font-weight:bold;" target="_blank" title="Click to know more about R">R</a> )`<br/>`(Kreta)/(mg)`</p>Answer :A</body></html> | |
| 39259. |
The radius of a planet is R_(1) and a satellite revolve round of in a circule of radius R_(2). The time period of revolution is T. The acceleration due to the gravitation of the planet at its surface is |
| Answer» <html><body><p></p>Solution :Orbital velocity of the <a href="https://interviewquestions.tuteehub.com/tag/satellite-1195060" style="font-weight:bold;" target="_blank" title="Click to know more about SATELLITE">SATELLITE</a> `V_(0) = <a href="https://interviewquestions.tuteehub.com/tag/sqrt-1223129" style="font-weight:bold;" target="_blank" title="Click to know more about SQRT">SQRT</a>(g^(1)R_(2))` <br/> Where `g^(1) = g((R_(1))/(R_(2)))^(2)` <br/> and angular velocity `omega = (V_(0))/(R_(2)) = sqrt((g^(1))/(R_(2))) = sqrt((g(R_(1))^(2))/(R_(2)^(3)))` <br/> But time <a href="https://interviewquestions.tuteehub.com/tag/period-1151023" style="font-weight:bold;" target="_blank" title="Click to know more about PERIOD">PERIOD</a> of <a href="https://interviewquestions.tuteehub.com/tag/revolution-623158" style="font-weight:bold;" target="_blank" title="Click to know more about REVOLUTION">REVOLUTION</a> `T = (2pi)/(omega) = 2pisqrt((R_(2)^(3))/(gR_(1)^(2)))` <br/> (or) `T^(2) = 4pi^(2)(R_(2)^(3))/(gR_(1)^(2))` (or) `g = (4pi^(2))/(T^(2)) (R_(2)^(3))/(R_(1)^(2))`</body></html> | |
| 39260. |
A sphere rolls without slipping on an incline of inclination theta. The minimum coefficient of static friction to support pure rolling is to be |
| Answer» <html><body><p>`2/3 <a href="https://interviewquestions.tuteehub.com/tag/tantheta-3098264" style="font-weight:bold;" target="_blank" title="Click to know more about TANTHETA">TANTHETA</a>`<br/>`2/5tantheta`<br/>`2/7tantheta`<br/>`3/7tantheta` </p><a href="https://interviewquestions.tuteehub.com/tag/answer-15557" style="font-weight:bold;" target="_blank" title="Click to know more about ANSWER">ANSWER</a> :<a href="https://interviewquestions.tuteehub.com/tag/c-7168" style="font-weight:bold;" target="_blank" title="Click to know more about C">C</a></body></html> | |
| 39261. |
A wooden cylinder of length L is partly submerged in a liquid of specific gravity rho_() with n^(th)(n lt 1)part of it inside the liquid. Another immiscible liquid of ensity rho_(2). is poured to completely submerge the cylinder. Density of cylinder rho is the square root of the product of densities of two liquids Express the density of upper liquid in terms of density of cylinder |
| Answer» <html><body><p>`<a href="https://interviewquestions.tuteehub.com/tag/rho-623364" style="font-weight:bold;" target="_blank" title="Click to know more about RHO">RHO</a>//<a href="https://interviewquestions.tuteehub.com/tag/n-568463" style="font-weight:bold;" target="_blank" title="Click to know more about N">N</a>`<br/>`rhon`<br/>`(n)/((n+1)rho)`<br/>None</p>Answer :<a href="https://interviewquestions.tuteehub.com/tag/b-387190" style="font-weight:bold;" target="_blank" title="Click to know more about B">B</a></body></html> | |
| 39262. |
If unit of a physical quantity is doubled, what will be its new value. |
| Answer» <html><body><p></p><a href="https://interviewquestions.tuteehub.com/tag/solution-25781" style="font-weight:bold;" target="_blank" title="Click to know more about SOLUTION">SOLUTION</a> :We <a href="https://interviewquestions.tuteehub.com/tag/know-534065" style="font-weight:bold;" target="_blank" title="Click to know more about KNOW">KNOW</a> that, <br/> `n_(<a href="https://interviewquestions.tuteehub.com/tag/1-256655" style="font-weight:bold;" target="_blank" title="Click to know more about 1">1</a>)u_(1)=n_(2)u_(2)` <br/> `:. n_(2)=(n_(1)u_(1))/(u_(2))` <br/> `=(n_(1)u_(1))/(2u_(1)) "" [ :.u_(1)=2u_(1)]` <br/> `=(n_(1))/(2)`</body></html> | |
| 39263. |
A wooden cylinder of length L is partly submerged in a liquid of specific gravity rho_() with n^(th)(n lt 1)part of it inside the liquid. Another immiscible liquid of ensity rho_(2). is poured to completely submerge the cylinder. Density of cylinder rho is the square root of the product of densities of two liquids Calculate the fraction of the cylinder (less than one) submerged in the lower liquid after the upper liquid is poured in the vessel |
| Answer» <html><body><p>`(<a href="https://interviewquestions.tuteehub.com/tag/n-568463" style="font-weight:bold;" target="_blank" title="Click to know more about N">N</a>)/((n+1))`<br/>`((n-1))/((n+1))`<br/>`(n(n-1))/((n+1))`<br/>`(n+1)/((n-1))`</p><a href="https://interviewquestions.tuteehub.com/tag/answer-15557" style="font-weight:bold;" target="_blank" title="Click to know more about ANSWER">ANSWER</a> :A</body></html> | |
| 39264. |
A geo-stationary satellite orbits around the earth in a circular orbit which is at a height of 36000 km from the surface of earth. Then the period of spy satellite orbiting a few hundred km above the earth.s surface (R_("earth") = 6400 km ) will aproximately be |
| Answer» <html><body><p>`(<a href="https://interviewquestions.tuteehub.com/tag/1-256655" style="font-weight:bold;" target="_blank" title="Click to know more about 1">1</a>)/(2)` <a href="https://interviewquestions.tuteehub.com/tag/hr-25457" style="font-weight:bold;" target="_blank" title="Click to know more about HR">HR</a> <br/>`1(1)/(2)`hr <br/>2 hr <br/><a href="https://interviewquestions.tuteehub.com/tag/4-311707" style="font-weight:bold;" target="_blank" title="Click to know more about 4">4</a> hr </p><a href="https://interviewquestions.tuteehub.com/tag/answer-15557" style="font-weight:bold;" target="_blank" title="Click to know more about ANSWER">ANSWER</a> :<a href="https://interviewquestions.tuteehub.com/tag/b-387190" style="font-weight:bold;" target="_blank" title="Click to know more about B">B</a></body></html> | |
| 39265. |
A box of mass 50kg at rest is pulled up on an inclined plane 12m long and 2m high by a constant force of 100N. When it reaches the top of the inclined plane if its velocity is 2ms^(-1) , the work done against friction in Joules is (g = 10ms^(-2)) |
| Answer» <html><body><p>50<br/>100<br/>150<br/>200</p>Answer :<a href="https://interviewquestions.tuteehub.com/tag/b-387190" style="font-weight:bold;" target="_blank" title="Click to know more about B">B</a></body></html> | |
| 39266. |
A man is waiting at a bus stop by holding a box on his head. Work done by him is |
| Answer» <html><body><p><a href="https://interviewquestions.tuteehub.com/tag/zero-751093" style="font-weight:bold;" target="_blank" title="Click to know more about ZERO">ZERO</a> <br/><a href="https://interviewquestions.tuteehub.com/tag/positive-1159908" style="font-weight:bold;" target="_blank" title="Click to know more about POSITIVE">POSITIVE</a> <br/><a href="https://interviewquestions.tuteehub.com/tag/negative-570381" style="font-weight:bold;" target="_blank" title="Click to know more about NEGATIVE">NEGATIVE</a> <br/><a href="https://interviewquestions.tuteehub.com/tag/infinity-515780" style="font-weight:bold;" target="_blank" title="Click to know more about INFINITY">INFINITY</a> </p><a href="https://interviewquestions.tuteehub.com/tag/answer-15557" style="font-weight:bold;" target="_blank" title="Click to know more about ANSWER">ANSWER</a> :A</body></html> | |
| 39267. |
Force means change in momentum. |
| Answer» <html><body><p><br/></p><a href="https://interviewquestions.tuteehub.com/tag/answer-15557" style="font-weight:bold;" target="_blank" title="Click to know more about ANSWER">ANSWER</a> :<a href="https://interviewquestions.tuteehub.com/tag/force-22342" style="font-weight:bold;" target="_blank" title="Click to know more about FORCE">FORCE</a></body></html> | |
| 39268. |
A rod of original length L_(1) changes its temperature from T_(2) to T_(2). If alpha is temperature coefficient of linear expansion and L_(2) is length of temperature T_(2). Choose the correct options(s). |
| Answer» <html><body><p>`L_(2) = L_(<a href="https://interviewquestions.tuteehub.com/tag/1-256655" style="font-weight:bold;" target="_blank" title="Click to know more about 1">1</a>) [1+<a href="https://interviewquestions.tuteehub.com/tag/alpha-858274" style="font-weight:bold;" target="_blank" title="Click to know more about ALPHA">ALPHA</a> (T_(2) - T_(1) ) ]`, where `T_(2) - T_(1) and alpha` are not large<br/>`L_(2) = L_(1) e^( alpha (T_(2) -T_(1) ) )`, where `alpha` is <a href="https://interviewquestions.tuteehub.com/tag/constant-930172" style="font-weight:bold;" target="_blank" title="Click to know more about CONSTANT">CONSTANT</a><br/>`L_(2) = L_(1) e^( int_(T_1)^(T_2)alpha d T) `, where `alpha` is a function of temperature<br/>Formula in option (a) is valid in all conditions</p>Answer :A::B::C</body></html> | |
| 39269. |
A body of mass 5 xx 10^(-3) kg is launched upon a rough inclined plane making an angle of 30° with the horizontal. Find the coefficient of friction between the body and the plane if the time of ascent is half of the time of descent. |
| Answer» <html><body><p>0.346<br/>0.436<br/>0.463<br/>0.364</p>Solution :0.346</body></html> | |
| 39270. |
A pendulum is released from point A as shown in figure. At some instant net force one the bob is making an angle theta with the string. Then Match the following {:(,"Table-1",,"Table-2"),("(A)","For "theta=30^(@),"(P)","Particle may be moving along BA"),("(B)","For "theta=120^(@),"(Q)","Particle may be moving along CB"),("(C)","For "theta=90^(@),"(R)","Particle may be at A"),("(D)","For "theta=0^(@),"(S)","Particle is at B"),(,,"(T)","None"):} |
| Answer» <html><body><p><br/></p><a href="https://interviewquestions.tuteehub.com/tag/answer-15557" style="font-weight:bold;" target="_blank" title="Click to know more about ANSWER">ANSWER</a> :(A)<a href="https://interviewquestions.tuteehub.com/tag/qp-1173717" style="font-weight:bold;" target="_blank" title="Click to know more about QP">QP</a>,(<a href="https://interviewquestions.tuteehub.com/tag/b-387190" style="font-weight:bold;" target="_blank" title="Click to know more about B">B</a>)T,(<a href="https://interviewquestions.tuteehub.com/tag/c-7168" style="font-weight:bold;" target="_blank" title="Click to know more about C">C</a>)<a href="https://interviewquestions.tuteehub.com/tag/r-611811" style="font-weight:bold;" target="_blank" title="Click to know more about R">R</a>,(D)S</body></html> | |
| 39271. |
Select the correct statement(s) for a given vernier callipers, when the two jaws of the apparatus are in contact. |
| Answer» <html><body><p>If the <a href="https://interviewquestions.tuteehub.com/tag/zero-751093" style="font-weight:bold;" target="_blank" title="Click to know more about ZERO">ZERO</a> of the vernier <a href="https://interviewquestions.tuteehub.com/tag/callipers-907970" style="font-weight:bold;" target="_blank" title="Click to know more about CALLIPERS">CALLIPERS</a>, does not coincide with the zero of the <a href="https://interviewquestions.tuteehub.com/tag/main-552371" style="font-weight:bold;" target="_blank" title="Click to know more about MAIN">MAIN</a> scale, then the vernier callipers is said to possess zero error. <br/>Zero error and zero correction are same numerically, but opposite in <a href="https://interviewquestions.tuteehub.com/tag/sign-1207134" style="font-weight:bold;" target="_blank" title="Click to know more about SIGN">SIGN</a>. <br/>Zero error is positive, when zero of the vernier scale lies to the left of the zero of the main scale. <br/>Zero error is negative, when zero of the vernier scale lies to the left of the zero of the main scale. </p><a href="https://interviewquestions.tuteehub.com/tag/answer-15557" style="font-weight:bold;" target="_blank" title="Click to know more about ANSWER">ANSWER</a> :A::B::D</body></html> | |
| 39272. |
A body is pushed up on a rough inclined plane making an angle 30^@to the horizontal. If its time of ascent on the plane is half the time of its descent, find coefficient of friction between the body and the inclined plane. |
| Answer» <html><body><p>`(<a href="https://interviewquestions.tuteehub.com/tag/sqrt3-3056952" style="font-weight:bold;" target="_blank" title="Click to know more about SQRT3">SQRT3</a>)/(5)` <br/>`<a href="https://interviewquestions.tuteehub.com/tag/sqrt-1223129" style="font-weight:bold;" target="_blank" title="Click to know more about SQRT">SQRT</a>(<a href="https://interviewquestions.tuteehub.com/tag/3-301577" style="font-weight:bold;" target="_blank" title="Click to know more about 3">3</a>//5)` <br/>`(3)/(<a href="https://interviewquestions.tuteehub.com/tag/sqrt5-3056988" style="font-weight:bold;" target="_blank" title="Click to know more about SQRT5">SQRT5</a>)` <br/>`3//5`</p>Answer :A</body></html> | |
| 39273. |
A gas under constant pressure of 4.5 xx 10^(5) Pa when subjected to 800 kJ of heat, changes the volume from 0.5 m^(3) to 2.0 m^(3). The change in internal energy of the gas is |
| Answer» <html><body><p>`6.75 xx <a href="https://interviewquestions.tuteehub.com/tag/10-261113" style="font-weight:bold;" target="_blank" title="Click to know more about 10">10</a>^(5) J`<br/>`5.25 xx 10^(5) J`<br/>`<a href="https://interviewquestions.tuteehub.com/tag/3-301577" style="font-weight:bold;" target="_blank" title="Click to know more about 3">3</a>.25 xx 10^(5) j`<br/>`1.25 xx 10^(5) J`</p><a href="https://interviewquestions.tuteehub.com/tag/solution-25781" style="font-weight:bold;" target="_blank" title="Click to know more about SOLUTION">SOLUTION</a> :Here, `P = 4.5 xx 10^(5) Pa, <a href="https://interviewquestions.tuteehub.com/tag/delta-947703" style="font-weight:bold;" target="_blank" title="Click to know more about DELTA">DELTA</a> <a href="https://interviewquestions.tuteehub.com/tag/q-609558" style="font-weight:bold;" target="_blank" title="Click to know more about Q">Q</a> = 800 kJ, V_(1) = 0.5 m^(3), V_(2) = 2m^(3)` <br/> The work done by the gas is <br/> `Delta W = P Delta V = P(V_(2) - V_(1)) = 4.5 xx 10^(5) (2-0.5) = 6.75 xx 10^(5) J` <br/> From the first law of thermodynamics, the change in internal energy is <br/> `Delta U = Delta Q - Delta W = 800 xx 10^(3) - 6.75 xx 10^(5) = 1.25 xx 10^(5)J`</body></html> | |
| 39274. |
A lawn roller has a mass of 80 kg and radius of gyration of k_(G)=0.175 m. The coefficient of friction between the roller the ground is mu_(A)=0.12. If it is pushed forward with a force of 200 N when the handle makes an angle of 45^(@), determine the acceleration of the roller. The radius of the roller is 200 mm. |
| Answer» <html><body><p></p><a href="https://interviewquestions.tuteehub.com/tag/solution-25781" style="font-weight:bold;" target="_blank" title="Click to know more about SOLUTION">SOLUTION</a> :1.18 `m//s^(<a href="https://interviewquestions.tuteehub.com/tag/2-283658" style="font-weight:bold;" target="_blank" title="Click to know more about 2">2</a>)`</body></html> | |
| 39275. |
A disc rolls on ground slipping Velocity of centre of mass is v. If the point P lies on the circumference of disc at angle theta as shown in the figure then the speed v_(p) at the point P, when theta=90^(@),120^(@),180^(@) |
| Answer» <html><body><p>`sqrt(2)<a href="https://interviewquestions.tuteehub.com/tag/v-722631" style="font-weight:bold;" target="_blank" title="Click to know more about V">V</a>,sqrt(<a href="https://interviewquestions.tuteehub.com/tag/3-301577" style="font-weight:bold;" target="_blank" title="Click to know more about 3">3</a>)v,<a href="https://interviewquestions.tuteehub.com/tag/2v-300496" style="font-weight:bold;" target="_blank" title="Click to know more about 2V">2V</a>` <br/>`v,2v,sqrt(3)v`<br/>`2v,sqrt(3)v,sqrt(2)v`<br/>`sqrt(3)v,v,sqrt(<a href="https://interviewquestions.tuteehub.com/tag/5-319454" style="font-weight:bold;" target="_blank" title="Click to know more about 5">5</a>)v` </p><a href="https://interviewquestions.tuteehub.com/tag/answer-15557" style="font-weight:bold;" target="_blank" title="Click to know more about ANSWER">ANSWER</a> :A</body></html> | |
| 39276. |
S.I. unit of Electric intensity is |
| Answer» <html><body><p>`Hm^(-<a href="https://interviewquestions.tuteehub.com/tag/1-256655" style="font-weight:bold;" target="_blank" title="Click to know more about 1">1</a>)`<br/>`<a href="https://interviewquestions.tuteehub.com/tag/nm-579234" style="font-weight:bold;" target="_blank" title="Click to know more about NM">NM</a>^(-1)`<br/>`Vm^(-1)`<br/>`<a href="https://interviewquestions.tuteehub.com/tag/nc-576183" style="font-weight:bold;" target="_blank" title="Click to know more about NC">NC</a>`</p>Answer :<a href="https://interviewquestions.tuteehub.com/tag/c-7168" style="font-weight:bold;" target="_blank" title="Click to know more about C">C</a></body></html> | |
| 39277. |
A dimensionally wrong equation in which principle of homogenity of dimensions is violated must be wrong. Can you say that, a dimensionally correct question should always be right? |
| Answer» <html><body><p></p><a href="https://interviewquestions.tuteehub.com/tag/solution-25781" style="font-weight:bold;" target="_blank" title="Click to know more about SOLUTION">SOLUTION</a> :<a href="https://interviewquestions.tuteehub.com/tag/need-25476" style="font-weight:bold;" target="_blank" title="Click to know more about NEED">NEED</a> not be.</body></html> | |
| 39278. |
A force of 20 N acts on a body for 2 micro second. Calculate the impulse. If the mass of the body is 1 g, calculate the change of velocity. |
| Answer» <html><body><p><br/></p>Answer :`<a href="https://interviewquestions.tuteehub.com/tag/4-311707" style="font-weight:bold;" target="_blank" title="Click to know more about 4">4</a> xx 10^(-<a href="https://interviewquestions.tuteehub.com/tag/5-319454" style="font-weight:bold;" target="_blank" title="Click to know more about 5">5</a>) Ns; 4 xx 10^(-1) ms^(-2)`</body></html> | |
| 39279. |
An electric heater supplies heat to a system at a rate of 100J/s. If system performs work at the rate of 75 Joule per second, the rate of increase of internal energy is |
| Answer» <html><body><p>`<a href="https://interviewquestions.tuteehub.com/tag/50-322056" style="font-weight:bold;" target="_blank" title="Click to know more about 50">50</a> "<a href="https://interviewquestions.tuteehub.com/tag/js-522034" style="font-weight:bold;" target="_blank" title="Click to know more about JS">JS</a>"^(-1)`<br/>`25 "JS"^(-1)`<br/>`12.5 "JS"^(-1)`<br/>`175 "JS"^(-1)`</p><a href="https://interviewquestions.tuteehub.com/tag/answer-15557" style="font-weight:bold;" target="_blank" title="Click to know more about ANSWER">ANSWER</a> :B</body></html> | |
| 39280. |
The surface tension of a liquid is 0.04 Nm^(-1) its value in C.G.S system is |
| Answer» <html><body><p>`4"<a href="https://interviewquestions.tuteehub.com/tag/dyne-961313" style="font-weight:bold;" target="_blank" title="Click to know more about DYNE">DYNE</a>"cm^(-1)`<br/>`<a href="https://interviewquestions.tuteehub.com/tag/40-314386" style="font-weight:bold;" target="_blank" title="Click to know more about 40">40</a> "dyne"cm^(-1)`<br/>`<a href="https://interviewquestions.tuteehub.com/tag/400-315233" style="font-weight:bold;" target="_blank" title="Click to know more about 400">400</a>"dyne"cm^(-1)`<br/>`0.044"dyne"cm^(-1)`</p>Answer :<a href="https://interviewquestions.tuteehub.com/tag/b-387190" style="font-weight:bold;" target="_blank" title="Click to know more about B">B</a></body></html> | |
| 39281. |
A sphere of mass 3 kg moving with a velocity of 2 ms- collides head-on with another sphere of mass 4 kg moving in opposite direction with a velocity of 1 ms. After collision if they stick together and move with a velocity v, find (i) the total initial momentum and (ii) the value of velocity v. |
| Answer» <html><body><p><br/></p><a href="https://interviewquestions.tuteehub.com/tag/answer-15557" style="font-weight:bold;" target="_blank" title="Click to know more about ANSWER">ANSWER</a> :`<a href="https://interviewquestions.tuteehub.com/tag/2-283658" style="font-weight:bold;" target="_blank" title="Click to know more about 2">2</a> <a href="https://interviewquestions.tuteehub.com/tag/kgms-2769162" style="font-weight:bold;" target="_blank" title="Click to know more about KGMS">KGMS</a> ^(-<a href="https://interviewquestions.tuteehub.com/tag/1-256655" style="font-weight:bold;" target="_blank" title="Click to know more about 1">1</a>);2//7 <a href="https://interviewquestions.tuteehub.com/tag/ms-549331" style="font-weight:bold;" target="_blank" title="Click to know more about MS">MS</a> ^(-1)`</body></html> | |
| 39282. |
Particles of masses m, 2m , 3m …..nm grams are placed on the same line at distances l,2l,3l,…nl cm from a fixed point. The distance of centre of mass of the particles from the fixed point in centimetre is |
| Answer» <html><body><p>`((2n+<a href="https://interviewquestions.tuteehub.com/tag/1-256655" style="font-weight:bold;" target="_blank" title="Click to know more about 1">1</a>)l)/(3)`<br/>`(l)/(n+1)`<br/>`(n(n^(<a href="https://interviewquestions.tuteehub.com/tag/2-283658" style="font-weight:bold;" target="_blank" title="Click to know more about 2">2</a>)+1)l)/(2)`<br/>`(<a href="https://interviewquestions.tuteehub.com/tag/2l-300409" style="font-weight:bold;" target="_blank" title="Click to know more about 2L">2L</a>)/(n(n^(2)+1))`</p><a href="https://interviewquestions.tuteehub.com/tag/answer-15557" style="font-weight:bold;" target="_blank" title="Click to know more about ANSWER">ANSWER</a> :A</body></html> | |
| 39283. |
Time for 20 oscillations of a pendulum is measured as t_(1)= 39.6 s, t_(2) = 39.9 s and t_(3) = 39.5 s. What is the precision in the measurements ? What is the accuracy of the measurement ? |
| Answer» <html><body><p></p>Solution :<a href="https://interviewquestions.tuteehub.com/tag/given-473447" style="font-weight:bold;" target="_blank" title="Click to know more about GIVEN">GIVEN</a> `t_(1)=39.6s t_(2)=39.9 s and t_(<a href="https://interviewquestions.tuteehub.com/tag/3-301577" style="font-weight:bold;" target="_blank" title="Click to know more about 3">3</a>)=39.5 s` <br/> Least count of measuring instrument = 0.1 s (As measurements have only one significant <a href="https://interviewquestions.tuteehub.com/tag/figure-987693" style="font-weight:bold;" target="_blank" title="Click to know more about FIGURE">FIGURE</a> after decimal <a href="https://interviewquestions.tuteehub.com/tag/point-1157106" style="font-weight:bold;" target="_blank" title="Click to know more about POINT">POINT</a>) <br/> Precision in the measurement = Least count of the instrument = 0.1 s <br/><br/> Average time for 20 oscillations is given by <br/> `t=(t_(1)+t_(2)+t_(3))/(3)` <br/> `=(329.6+39.9+39.5)/(3)=39.7 s` <br/> Absolute errors in the measurements <br/> `Deltat_(1)=t-t_(2)=39.7-39.6-39.6=0.1s ` <br/> `Deltat_(2)=t-t_(2)=39.7-39.39.5 = 0.2 s` <br/> Average absolute error `=(|Deltat_(1)|+|Deltat_(2)|+|Deltat_(3)|)/(3)` <br/> `=(0.1+0.2+0.2)/(3)` <br/> `=(0.5)/(3)=0.17~~0.2` <br/> (rounding off upto one decimal place) <br/> `:.` Accuracy of measurement `=+-0.2s`</body></html> | |
| 39284. |
The casting of a rocket in flight burns up due to friction. At whose expense the heat energy required for burning obtained ? The rocket or the atmosphere ,or both / |
| Answer» <html><body><p></p><a href="https://interviewquestions.tuteehub.com/tag/solution-25781" style="font-weight:bold;" target="_blank" title="Click to know more about SOLUTION">SOLUTION</a> :The only sourceof <a href="https://interviewquestions.tuteehub.com/tag/energy-15288" style="font-weight:bold;" target="_blank" title="Click to know more about ENERGY">ENERGY</a> is the kinetic energy of the <a href="https://interviewquestions.tuteehub.com/tag/rocket-1190549" style="font-weight:bold;" target="_blank" title="Click to know more about ROCKET">ROCKET</a>.The atmosphere does not contribute any energy . Its role is only to provide friction to convert the kinetic energyof the rocket into heat energy .</body></html> | |
| 39285. |
A rocket accelerates straight up by ejecting gas downwards . In small time interval Deltat , it ejects a gas of mass Deltamat a relative speed u . Calculate kE of the entire system at t+Deltat and tand show that the device that ejects gas does work = (1/2) Delta"mu"^(2) in this time interval (negative gravity ). |
| Answer» <html><body><p></p>Solution :M =mass of rocket at t <br/> v = velocity of rocket at t <br/> `Deltam ` = mass of ejected <a href="https://interviewquestions.tuteehub.com/tag/gas-1003521" style="font-weight:bold;" target="_blank" title="Click to know more about GAS">GAS</a> in `Deltat` <br/> u = relative <a href="https://interviewquestions.tuteehub.com/tag/speed-1221896" style="font-weight:bold;" target="_blank" title="Click to know more about SPEED">SPEED</a> of ejected gas <br/> <a href="https://interviewquestions.tuteehub.com/tag/consider-2017521" style="font-weight:bold;" target="_blank" title="Click to know more about CONSIDER">CONSIDER</a> at time t + `Deltat` <br/> `(KE)_(t) +(KE)_(Deltat) = `KE of rocket + Ke of `= 1/2 (M-Deltam) (v+Deltav)^(2) +1/2Deltam (v-u)^(2)` <br/> `1/2 Mv^(2) +Mv Deltav -Deltamvu +1/2 Delta"mu"^(2)` <br/> `(KE)_(t) =` KE of the rocket at time t = `1/2 Mv^(2)` <br/> `DeltaK - (KE)_(t) +(KE)_(Deltat) -(KE)_(t)` <br/> `(MDeltav - Delta"mu") v +1/2 Delta" mu"^(2)` <br/> Hene , `M (dv)/(dt) =(dc)/(dt) |u|` <br/> ` :. M Deltav = Delta"mu"` <br/> `:. DeltaK = 1/2 Delta"mu"^(2)` <br/> Now , by work - <a href="https://interviewquestions.tuteehub.com/tag/energy-15288" style="font-weight:bold;" target="_blank" title="Click to know more about ENERGY">ENERGY</a> theorem , <br/> `DeltaK = Delta W ` <br/> ` :. Delta W = 1/2 Delta"mu"^(2)`</body></html> | |
| 39286. |
40V A constant force vecF is acting on a body of mass m makes it move with constant velocity vecv as shown in the M figure. The power P exerted is |
| Answer» <html><body><p>`F cos theta <a href="https://interviewquestions.tuteehub.com/tag/v-722631" style="font-weight:bold;" target="_blank" title="Click to know more about V">V</a>`<br/>`(F cos theta)/(<a href="https://interviewquestions.tuteehub.com/tag/mg-1095425" style="font-weight:bold;" target="_blank" title="Click to know more about MG">MG</a>)`<br/>`(F mg cos theta)/(v)`<br/>`(mg sin theta)/F`</p>Solution :<img src="https://doubtnut-static.s.llnwi.net/static/physics_images/MTG_NEET_GID_PHY_XI_C04_E01_062_S01.png" width="80%"/> <br/> <a href="https://interviewquestions.tuteehub.com/tag/power-2475" style="font-weight:bold;" target="_blank" title="Click to know more about POWER">POWER</a> = (<a href="https://interviewquestions.tuteehub.com/tag/component-926634" style="font-weight:bold;" target="_blank" title="Click to know more about COMPONENT">COMPONENT</a> of <a href="https://interviewquestions.tuteehub.com/tag/force-22342" style="font-weight:bold;" target="_blank" title="Click to know more about FORCE">FORCE</a> in the direction of velocity) `|vecv|`<br/> `= F cos theta v`.</body></html> | |
| 39287. |
A tuning fork A, marked 512 Hz, produces 5 beats per second, where sounded with another unmarked tuning fork B. If B is loaded with wax the number of beats is again 5 per second. What is the frequency of the tuning fork B when not loaded ? |
| Answer» <html><body><p></p>Solution :Here `<a href="https://interviewquestions.tuteehub.com/tag/f-455800" style="font-weight:bold;" target="_blank" title="Click to know more about F">F</a> _(A) = 512 Hz implies f _(B) = <a href="https://interviewquestions.tuteehub.com/tag/limlimits-y-rightarrow-2-fracy2-4y-2-517-324511" style="font-weight:bold;" target="_blank" title="Click to know more about 517">517</a> Hz or 507 Hz` <br/> `(because ` Initial beat <a href="https://interviewquestions.tuteehub.com/tag/frequency-465761" style="font-weight:bold;" target="_blank" title="Click to know more about FREQUENCY">FREQUENCY</a> between A and B is <a href="https://interviewquestions.tuteehub.com/tag/5-319454" style="font-weight:bold;" target="_blank" title="Click to know more about 5">5</a> Hz) <br/> Now, when some wax is applied on B, its frequency will decrease and will assume that value `f._(B)` such that, <br/> `(i) f ._(B) lt f _(B.) (ii) f _(A)~f._(B) = 5 Hz` <br/> `(because` Final beat frequency beetween A and B is also 5 Hz) <br/> `implies f_(B)=517 Hz and f._(B) = 507 Hz` <br/> because `507 lt 517 impliesf._(B) lt f _(B)` <br/> `and f _(B) -f _(A) =517 -512 =5 Hz` <br/> and `f _(A) -f _(B) = 512 -507 = 5 Hz` <br/> Note: Here `f _(B) ne 507Hz` because otherwise after applying wax on `B, f ._(B) lt 507Hz` and then `f _(A) -f._(B) gt 5 Hz` which would be wrong as per the data given in the statement.</body></html> | |
| 39288. |
(A) : The order of accuracy of a measurement depends on the least count of the instrument. (R) : The smaller the least count, more number of significant figures are in the measured value. |
| Answer» <html><body><p>Both (A) and (<a href="https://interviewquestions.tuteehub.com/tag/r-611811" style="font-weight:bold;" target="_blank" title="Click to know more about R">R</a>) are <a href="https://interviewquestions.tuteehub.com/tag/true-713260" style="font-weight:bold;" target="_blank" title="Click to know more about TRUE">TRUE</a> and (R) is the correct explanation of (A)<br/>Both (A) and (R) are true and (R) is not the correct explanation of (A)<br/>(A) is true but (R) is false<br/>Both (A) and (R) are false</p>Answer :B</body></html> | |
| 39289. |
Calculate the specific heat capacities at constant volume and constant pressure for CO (2),Given gamma = 1.30, R =8.33 J mol ^(-1) K ^(-1). |
| Answer» <html><body><p><<a href="https://interviewquestions.tuteehub.com/tag/p-588962" style="font-weight:bold;" target="_blank" title="Click to know more about P">P</a>></p>Solution :`<a href="https://interviewquestions.tuteehub.com/tag/c-7168" style="font-weight:bold;" target="_blank" title="Click to know more about C">C</a> _(p) = C _(v) =R, gamma = ( C _(p))/( C _(v))` <br/> `gamma C _(gamma) - C _(v) = R` <br/> `C _(v) =(R )/(gamma - <a href="https://interviewquestions.tuteehub.com/tag/1-256655" style="font-weight:bold;" target="_blank" title="Click to know more about 1">1</a>) = (8.33)/(1.3 -1) = (8.3)/(3) = 27.77 J mol ^(-1) K ^(-1)` <br/> `C _(p) = C _(v) + R = 27.77 + 8. 33 = 36.1 J mol ^(-1) K ^(-1)`</body></html> | |
| 39290. |
What is the condition for the vectors 2i + 3j - 4k and 3i - aj + bk to be parallel ? |
| Answer» <html><body><p>`a= -9//2, <a href="https://interviewquestions.tuteehub.com/tag/b-387190" style="font-weight:bold;" target="_blank" title="Click to know more about B">B</a> = - 6`<br/>`a= -6, b= - 9//2`<br/>`a=4, b= <a href="https://interviewquestions.tuteehub.com/tag/5-319454" style="font-weight:bold;" target="_blank" title="Click to know more about 5">5</a>`<br/>`a= <a href="https://interviewquestions.tuteehub.com/tag/8-336412" style="font-weight:bold;" target="_blank" title="Click to know more about 8">8</a>, b= 2`</p><a href="https://interviewquestions.tuteehub.com/tag/answer-15557" style="font-weight:bold;" target="_blank" title="Click to know more about ANSWER">ANSWER</a> :A</body></html> | |
| 39291. |
A ball is thrown up with a certain given velocity at angle theta to the horizontal. The kinetic energy, KE of the ball varies with horizontal displacement x as: |
| Answer» <html><body><p> <img src="https://doubtnut-static.s.llnwi.net/static/physics_images/AKS_TRG_AO_PHY_XI_V01_A_C08_E22_008_O01.png" width="30%"/><br/> <img src="https://doubtnut-static.s.llnwi.net/static/physics_images/AKS_TRG_AO_PHY_XI_V01_A_C08_E22_008_O02.png" width="30%"/><br/> <img src="https://doubtnut-static.s.llnwi.net/static/physics_images/AKS_TRG_AO_PHY_XI_V01_A_C08_E22_008_O03.png" width="30%"/><br/> <img src="https://doubtnut-static.s.llnwi.net/static/physics_images/AKS_TRG_AO_PHY_XI_V01_A_C08_E22_008_O04.png" width="30%"/></p><a href="https://interviewquestions.tuteehub.com/tag/answer-15557" style="font-weight:bold;" target="_blank" title="Click to know more about ANSWER">ANSWER</a> :<a href="https://interviewquestions.tuteehub.com/tag/c-7168" style="font-weight:bold;" target="_blank" title="Click to know more about C">C</a></body></html> | |
| 39292. |
The most interesting and exciting part of applied physics with great ingenuity and persistence of effort in |
| Answer» <html><body><p>Admiring the <a href="https://interviewquestions.tuteehub.com/tag/scientist-638048" style="font-weight:bold;" target="_blank" title="Click to know more about SCIENTIST">SCIENTIST</a> who established the <a href="https://interviewquestions.tuteehub.com/tag/physical-600035" style="font-weight:bold;" target="_blank" title="Click to know more about PHYSICAL">PHYSICAL</a> laws<br/> Application of physical laws to make devices <a href="https://interviewquestions.tuteehub.com/tag/useful-1441152" style="font-weight:bold;" target="_blank" title="Click to know more about USEFUL">USEFUL</a><br/>Exploitation of physical laws to make useful devices<br/>Practicing theories established </p><a href="https://interviewquestions.tuteehub.com/tag/answer-15557" style="font-weight:bold;" target="_blank" title="Click to know more about ANSWER">ANSWER</a> :<a href="https://interviewquestions.tuteehub.com/tag/c-7168" style="font-weight:bold;" target="_blank" title="Click to know more about C">C</a></body></html> | |
| 39293. |
A ball is thrown downwards with a speed of 20m//s from top of a building 150m high and simultaneously another ball is thrown vertically upwards with a speed of 30m//s from the foot of the building . Find the time when both the balls will meet . (g=10m//s^(2)) |
| Answer» <html><body><p></p>Solution :(i)`S_(1)=20t+5t^(2)+S_(2)=30t-5t^(2)`<br/>`150=50t`<br/>`t=3s`.<br/> <img src="https://doubtnut-static.s.llnwi.net/static/physics_images/AKS_ELT_AI_PHY_XI_V01_A_C03_SLV_026_S01.png" width="80%"/><br/>(<a href="https://interviewquestions.tuteehub.com/tag/ii-1036832" style="font-weight:bold;" target="_blank" title="Click to know more about II">II</a>)<a href="https://interviewquestions.tuteehub.com/tag/relative-1183377" style="font-weight:bold;" target="_blank" title="Click to know more about RELATIVE">RELATIVE</a> acceleration of both is zero since both have acceleration in <a href="https://interviewquestions.tuteehub.com/tag/downward-2061463" style="font-weight:bold;" target="_blank" title="Click to know more about DOWNWARD">DOWNWARD</a> direction.<br/>`veca_(AB)=veca_(A)-veca_(B)=g-g=0`<br/> `vecV_(BA)=30-(-20)=<a href="https://interviewquestions.tuteehub.com/tag/50-322056" style="font-weight:bold;" target="_blank" title="Click to know more about 50">50</a>`<br/>`S_(BA)=V_(BA)xxt`<br/> `t=(S_(BA))/(V_(BA))=(150)/(50)=3s`<br/> <img src="https://doubtnut-static.s.llnwi.net/static/physics_images/AKS_ELT_AI_PHY_XI_V01_A_C03_SLV_026_S02.png" width="80%"/></body></html> | |
| 39294. |
When a soapwater bubble is given a positive charge it expands. If it is given a negative charge, then it |
| Answer» <html><body><p>expands<br/>contracts<br/>remains same <br/>does not <a href="https://interviewquestions.tuteehub.com/tag/hold-1028313" style="font-weight:bold;" target="_blank" title="Click to know more about HOLD">HOLD</a> <a href="https://interviewquestions.tuteehub.com/tag/negative-570381" style="font-weight:bold;" target="_blank" title="Click to know more about NEGATIVE">NEGATIVE</a> charge</p>Answer :A</body></html> | |
| 39295. |
A particle moves along x-axis from x=0 "to"x=8 under the influence of a force given by F=3x^(2)-4x+5. Find thework done in the process. |
| Answer» <html><body><p></p>Solution :<a href="https://interviewquestions.tuteehub.com/tag/work-20377" style="font-weight:bold;" target="_blank" title="Click to know more about WORK">WORK</a> donein the moving a <a href="https://interviewquestions.tuteehub.com/tag/particle-1147478" style="font-weight:bold;" target="_blank" title="Click to know more about PARTICLE">PARTICLE</a> from x=<a href="https://interviewquestions.tuteehub.com/tag/0-251616" style="font-weight:bold;" target="_blank" title="Click to know more about 0">0</a> to x=<a href="https://interviewquestions.tuteehub.com/tag/8-336412" style="font-weight:bold;" target="_blank" title="Click to know more about 8">8</a> wil be <br/> `W=underset(0)overset(8)<a href="https://interviewquestions.tuteehub.com/tag/int-11513" style="font-weight:bold;" target="_blank" title="Click to know more about INT">INT</a>(3x^(2)-4x+5)dx=[(3x^(3))/3-(4x_(2))/2+5x]_(0)^(8)`<br/> `W=[3""(8)^(3)/3-4".(8^(2)/2)+40]=[512-128+40]=424J`</body></html> | |
| 39296. |
Find the gravitational attraction between two H-atoms of a hydrogen molecule. Given that mass of atom = 1.67xx10^(-27)kg and distance between two H-atoms = 1A^@ |
| Answer» <html><body><p>zero<br/>100N<br/>600N<br/>3600N</p>Answer :<a href="https://interviewquestions.tuteehub.com/tag/b-387190" style="font-weight:bold;" target="_blank" title="Click to know more about B">B</a></body></html> | |
| 39297. |
Explain when small pieces of ice pressed together, form a single block. |
| Answer» <html><body><p></p>Solution :This occurs due to the regelations. On increasing the pressure,the melting <a href="https://interviewquestions.tuteehub.com/tag/point-1157106" style="font-weight:bold;" target="_blank" title="Click to know more about POINT">POINT</a> of ice is <a href="https://interviewquestions.tuteehub.com/tag/lowered-7694237" style="font-weight:bold;" target="_blank" title="Click to know more about LOWERED">LOWERED</a>,and water is formed at the surface of contact. On removal of the pressure water freezes and <a href="https://interviewquestions.tuteehub.com/tag/thus-2307358" style="font-weight:bold;" target="_blank" title="Click to know more about THUS">THUS</a> the pieces are <a href="https://interviewquestions.tuteehub.com/tag/joined-521893" style="font-weight:bold;" target="_blank" title="Click to know more about JOINED">JOINED</a> <a href="https://interviewquestions.tuteehub.com/tag/together-3221943" style="font-weight:bold;" target="_blank" title="Click to know more about TOGETHER">TOGETHER</a>.</body></html> | |
| 39298. |
A 50 kg man is standing at one end of a 25 m long boat. He starts runing towards the other end. On reaching the other end his velocity is 2ms^(-1). If the mass of the boat is 200 kg, final velocity of the boat is (in ms^(-1)) |
| Answer» <html><body><p>`(<a href="https://interviewquestions.tuteehub.com/tag/2-283658" style="font-weight:bold;" target="_blank" title="Click to know more about 2">2</a>)/(<a href="https://interviewquestions.tuteehub.com/tag/5-319454" style="font-weight:bold;" target="_blank" title="Click to know more about 5">5</a>)` <br/>`(2)/(<a href="https://interviewquestions.tuteehub.com/tag/3-301577" style="font-weight:bold;" target="_blank" title="Click to know more about 3">3</a>)` <br/>`(<a href="https://interviewquestions.tuteehub.com/tag/8-336412" style="font-weight:bold;" target="_blank" title="Click to know more about 8">8</a>)/(5)` <br/>`(8)/(3)` </p><a href="https://interviewquestions.tuteehub.com/tag/answer-15557" style="font-weight:bold;" target="_blank" title="Click to know more about ANSWER">ANSWER</a> :A</body></html> | |
| 39299. |
(A) Optical instruments are assembled using lenses with very wide apertures. ( R) Wide aperture of lenses enables them to collect more light and produce bright images. |
| Answer» <html><body><p>Both A and R are <a href="https://interviewquestions.tuteehub.com/tag/true-713260" style="font-weight:bold;" target="_blank" title="Click to know more about TRUE">TRUE</a> and R is the <a href="https://interviewquestions.tuteehub.com/tag/correct-409949" style="font-weight:bold;" target="_blank" title="Click to know more about CORRECT">CORRECT</a> explanation of A<br/>Both A and R are true and R is not the correct explanation of A<br/>A is true and R is false<br/>Both A and R is false</p>Answer :A</body></html> | |
| 39300. |
Calculate the change in weight of a body of mass 5 kg when it is taken from equator to pole of earth. The time period of rotation of earth around its own axis is 24 hours. |
| Answer» <html><body><p><br/></p><a href="https://interviewquestions.tuteehub.com/tag/answer-15557" style="font-weight:bold;" target="_blank" title="Click to know more about ANSWER">ANSWER</a> :0.17 <a href="https://interviewquestions.tuteehub.com/tag/n-568463" style="font-weight:bold;" target="_blank" title="Click to know more about N">N</a></body></html> | |