Explore topic-wise InterviewSolutions in Class 11.

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.

36351.

2 kg of ice at -20^@Cis mixed with 5 kg of water at 20^@Cin an insulating vessel having a negligible heat capacity. Calculate the final mass of water remaining in the container. Given specific heat capacities of water and ice are 4.186 "kJ K"^(-1) and 2.092 "kJ K"^(-1)kg^(-1) respectively. Latent heat of fusion of ice = 334.7 "kJ kg"=^(-1)(in kg)

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/6-327005" style="font-weight:bold;" target="_blank" title="Click to know more about 6">6</a></body></html>
36352.

What is B the name of dimensional constant whose dimensions are the same as that of angular momentum.

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> :Planck.s <a href="https://interviewquestions.tuteehub.com/tag/constant-930172" style="font-weight:bold;" target="_blank" title="Click to know more about CONSTANT">CONSTANT</a>.</body></html>
36353.

What is the work done in increasing the angular frequency of a circular ring of mass 2kg and radius 25cm from 10 rpm to 20 rpm about ist axis ?

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> :Work done `=` <a href="https://interviewquestions.tuteehub.com/tag/increase-1040383" style="font-weight:bold;" target="_blank" title="Click to know more about INCREASE">INCREASE</a> in <a href="https://interviewquestions.tuteehub.com/tag/rotational-625601" style="font-weight:bold;" target="_blank" title="Click to know more about ROTATIONAL">ROTATIONAL</a> kinetic <br/> <a href="https://interviewquestions.tuteehub.com/tag/energy-15288" style="font-weight:bold;" target="_blank" title="Click to know more about ENERGY">ENERGY</a> `=(1)/(2)I(omega_(f)^(2)-omega_(i)^(2))=(1)/(2)MR^(2)(omega_(f)^(2)-omega_(i)^(2))` <br/> `=(1)/(2)xx2xx(0.25)^(2)(((2pi)/(3))^(2)-((pi)/(3))^(2))=0.2058J`</body></html>
36354.

One degree of arc is equal to..........

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>"<br/><a href="https://interviewquestions.tuteehub.com/tag/60-328817" style="font-weight:bold;" target="_blank" title="Click to know more about 60">60</a>"<br/>60'<br/>`60^(@)`</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> :60</body></html>
36355.

Should theboy follow the same path followed by the old man ? If not, why?

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> :Boy should take the shortest <a href="https://interviewquestions.tuteehub.com/tag/path-11833" style="font-weight:bold;" target="_blank" title="Click to know more about PATH">PATH</a> ,i.e., <a href="https://interviewquestions.tuteehub.com/tag/direct-954477" style="font-weight:bold;" target="_blank" title="Click to know more about DIRECT">DIRECT</a> from A to <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/> <img src="https://d10lpgp6xz60nq.cloudfront.net/physics_images/CHY_DMB_PHY_XI_P1_U02_C02_E08_019_S01.png" width="80%"/></body></html>
36356.

Two objects of masses 1 kg and 2 kg separated by a distance of 1.2 m are rotating about their centre of mass. Find the moment of inertia of the system.

Answer» <html><body><p></p>Solution :When two objects of <a href="https://interviewquestions.tuteehub.com/tag/mass-1088425" style="font-weight:bold;" target="_blank" title="Click to know more about MASS">MASS</a> m, and m, are <a href="https://interviewquestions.tuteehub.com/tag/separated-7272382" style="font-weight:bold;" target="_blank" title="Click to know more about SEPARATED">SEPARATED</a> by a distance .d., the distance of mass `m_(1)` from the <br/> centre of mass `=(m_(2)d)/(m_(1)+m_(2))` and the distance of mass `m_(2)` from the centre of mass `=(m_(1)d)/(m_(1)+m_(2))` <br/> Hence `I=m_(1)((m_(2)d)/(m_(1)+m_(2)))+m_(2)((m_(1)d)/(m_(1)+m_(2)))^(2)` <br/> On simplification `I=((m_(1)m_(2))/(m_(1)+m_(2)))d^(2)` <br/> Here `(m_(1)m_(2))/(m_(1)+m_(2))` is called reduced mass denoted by `mu`. Hence, for a system of two <a href="https://interviewquestions.tuteehub.com/tag/particles-1147533" style="font-weight:bold;" target="_blank" title="Click to know more about PARTICLES">PARTICLES</a> rotating about their centre of mass, moment of inertia `I=mud^(2)` <br/> In this <a href="https://interviewquestions.tuteehub.com/tag/problem-25530" style="font-weight:bold;" target="_blank" title="Click to know more about PROBLEM">PROBLEM</a>, `mu=(m_(1)m_(2))/(m_(1)+m_(2))=(1xx2)/(1+2)=(2)/(3)kg` <br/> `I=mud^(2)=(2)/(3)(1.2)^(2)=0.96kgm^(2)`</body></html>
36357.

A block of mass 1kg lies on a horizontal surface in the truck. The coefficient of friction between the block and the surface is 0.5. If the acceleration of the truck is 6ms^(-2) the acceleration of the block relative to ground is

Answer» <html><body><p>`<a href="https://interviewquestions.tuteehub.com/tag/6-327005" style="font-weight:bold;" target="_blank" title="Click to know more about 6">6</a> 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>)` <br/>`1.1 m//s^(2)` <br/>`4.9 m//s^(2)` <br/>`<a href="https://interviewquestions.tuteehub.com/tag/0-251616" style="font-weight:bold;" target="_blank" title="Click to know more about 0">0</a> m//s^(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/c-7168" style="font-weight:bold;" target="_blank" title="Click to know more about C">C</a></body></html>
36358.

What are the important characteristics of progressive wave?

Answer» <html><body><p></p>Solution :(i) Particles in the medium vibrate about their <a href="https://interviewquestions.tuteehub.com/tag/mean-1091459" style="font-weight:bold;" target="_blank" title="Click to know more about MEAN">MEAN</a> positions with the same amplitude <br/> (ii) The phase of every particle ranges from 0 to `2pi`. <br/> (iii) No particle remains at rest permanetly. Particle remains at rest permanetly. Particles come to the rest position only twiceat the extreme points during wave propagation. <br/> (iv) Transverse progressive waves are characterized by crests and troughs whereas longitudinal progressive waves are characterized by compressions and rerefactions. <br/> (v) At the <a href="https://interviewquestions.tuteehub.com/tag/man-1085541" style="font-weight:bold;" target="_blank" title="Click to know more about MAN">MAN</a> position the particles <a href="https://interviewquestions.tuteehub.com/tag/always-373607" style="font-weight:bold;" target="_blank" title="Click to know more about ALWAYS">ALWAYS</a> move the same maximum velocity. <br/> (<a href="https://interviewquestions.tuteehub.com/tag/vi-723586" style="font-weight:bold;" target="_blank" title="Click to know more about VI">VI</a>) The displacement velocity and acceleration of particles separated from each othher by `nlambda` are the same, where n-an integer, and `lambda`- the wavelength.</body></html>
36359.

A carnot's engine working between an unknown temperature and ice point gives an efficiency of 50%. What is the unknown temperature ?

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/q-609558" style="font-weight:bold;" target="_blank" title="Click to know more about Q">Q</a> _(1) -Q _(2) // Q _(1) = T _(1) - T _(2) //T_(1) . 100 //Q_(1) = 373 - 273 // 273 , Q_(1) = 373 J //s` <br/> `Q _(2) = Q _(1) - 100 = 373 - 100 = 273 J//s.` Mass of <a href="https://interviewquestions.tuteehub.com/tag/ice-1035302" style="font-weight:bold;" target="_blank" title="Click to know more about ICE">ICE</a> <a href="https://interviewquestions.tuteehub.com/tag/melting-1093090" style="font-weight:bold;" target="_blank" title="Click to know more about MELTING">MELTING</a> in <a href="https://interviewquestions.tuteehub.com/tag/one-585732" style="font-weight:bold;" target="_blank" title="Click to know more about ONE">ONE</a> minute `= Q _(2) t//L = 0.0496 kg`</body></html>
36360.

A ball is thrown vertically upwards with the speed of 19.6 ms^(-1) from the top of building and reaches the earth in 6 s. Find the height of the building .

Answer» <html><body><p></p>Solution :Using `s=ut+(1)/(<a href="https://interviewquestions.tuteehub.com/tag/2-283658" style="font-weight:bold;" target="_blank" title="Click to know more about 2">2</a>)at^(2)` <br/> `-h=19.6xx6+(1)/(2)<a href="https://interviewquestions.tuteehub.com/tag/xx-747671" style="font-weight:bold;" target="_blank" title="Click to know more about XX">XX</a>(-9.8)xx(<a href="https://interviewquestions.tuteehub.com/tag/6-327005" style="font-weight:bold;" target="_blank" title="Click to know more about 6">6</a>)^(2)` <br/> h=58.8m</body></html>
36361.

The distance of planet Jupiter from the sun is 5.2 times that of the earth. Find the period of resolution of Jupiter around the sun.

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> :Here ` r_1 = 5.2 r_e :T_3 = ? : T_e = 1 ` <a href="https://interviewquestions.tuteehub.com/tag/year-1464599" style="font-weight:bold;" target="_blank" title="Click to know more about YEAR">YEAR</a> <br/> ` <a href="https://interviewquestions.tuteehub.com/tag/therefore-706901" style="font-weight:bold;" target="_blank" title="Click to know more about THEREFORE">THEREFORE</a> (T_3^2)/(T_c^2) = (r_3^3)/(r_e^3)` <br/> ` T_3 = T_e (r_3/r_e)^(3/2) = 1 <a href="https://interviewquestions.tuteehub.com/tag/xx-747671" style="font-weight:bold;" target="_blank" title="Click to know more about XX">XX</a> ((5.2 r_e)/(r_e) )^(3/2) ` = 11.86 years</body></html>
36362.

A hollow shpere rolls down a 30^(@) incline of length 6m without slipping. The speed of centre of mass at the bottom of plane is

Answer» <html><body><p>`<a href="https://interviewquestions.tuteehub.com/tag/6ms-1912432" style="font-weight:bold;" target="_blank" title="Click to know more about 6MS">6MS</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>)`<br/>`3ms^(-1)`<br/>`6sqrt(2)<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)`<br/>`3sqrt(2)ms^(-1)`</p>Answer :A</body></html>
36363.

A spring, which is initially in its unstretched condition, is first stretched by a length x and then again by a further length x. The work done in the first case is W_1 and in the second case is W_2. Then

Answer» <html><body><p> `W_2 = W_1`<br/>`W_2 = 2W_1`<br/>`W_2 = 3W_1`<br/>`W_2 = <a href="https://interviewquestions.tuteehub.com/tag/4-311707" style="font-weight:bold;" target="_blank" title="Click to know more about 4">4</a> W_1`</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> :Let <a href="https://interviewquestions.tuteehub.com/tag/k-527196" style="font-weight:bold;" target="_blank" title="Click to know more about K">K</a> be the force constant of the spring. <br/> Potential energy of the spring after the first <a href="https://interviewquestions.tuteehub.com/tag/stretching-1229374" style="font-weight:bold;" target="_blank" title="Click to know more about STRETCHING">STRETCHING</a> is <br/> `U_1 = 1/2 kx^2` <br/> Potential energy of the spring after the second stretching is <br/> `U_2 = 1/2 k (2x)^2` <br/> `:. W_1 = U_1 = 1/2 kx^2` <br/> and `W_2 = U_2 - U_1 = 1/2 k(2x)^(2) - 1/2 kx^2 = 3(1/2 kx^2) = 3W_1`.</body></html>
36364.

A man of mass 60kg is in a liftand lift is accelerating upwards with acceleration 4m/s^(2). Calculate the effective weight of the man in lift.

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>.45 m`<a href="https://interviewquestions.tuteehub.com/tag/cdot-407575" style="font-weight:bold;" target="_blank" title="Click to know more about CDOT">CDOT</a> s^(-2)`<a href="https://interviewquestions.tuteehub.com/tag/downward-2061463" style="font-weight:bold;" target="_blank" title="Click to know more about DOWNWARD">DOWNWARD</a> 0,2.45 m`cdot s^(2)` <a href="https://interviewquestions.tuteehub.com/tag/upward-721781" style="font-weight:bold;" target="_blank" title="Click to know more about UPWARD">UPWARD</a></body></html>
36365.

When would two chairs, one made of wood and the other of iron, feel equally hot or cold?

Answer» <html><body><p></p>Solution :When the temperature of the chairs are equal to our body temperature, thermal equilibrium will exist between the body and the <a href="https://interviewquestions.tuteehub.com/tag/two-714195" style="font-weight:bold;" target="_blank" title="Click to know more about TWO">TWO</a> chairs, preventing any heat flow. Then they will appear <a href="https://interviewquestions.tuteehub.com/tag/equally-2065515" style="font-weight:bold;" target="_blank" title="Click to know more about EQUALLY">EQUALLY</a> <a href="https://interviewquestions.tuteehub.com/tag/hot-1029680" style="font-weight:bold;" target="_blank" title="Click to know more about HOT">HOT</a> or <a href="https://interviewquestions.tuteehub.com/tag/cold-921390" style="font-weight:bold;" target="_blank" title="Click to know more about COLD">COLD</a> on <a href="https://interviewquestions.tuteehub.com/tag/touch-11256" style="font-weight:bold;" target="_blank" title="Click to know more about TOUCH">TOUCH</a>.</body></html>
36366.

A ring and a disc of same mass roll without slippling along a horizontal surface with same velocity. If the K.E of ring is 8J, then that of disc is

Answer» <html><body><p><a href="https://interviewquestions.tuteehub.com/tag/2j-300716" style="font-weight:bold;" target="_blank" title="Click to know more about 2J">2J</a> <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> J <br/><a href="https://interviewquestions.tuteehub.com/tag/6-327005" style="font-weight:bold;" target="_blank" title="Click to know more about 6">6</a> J <br/><a href="https://interviewquestions.tuteehub.com/tag/16-276476" style="font-weight:bold;" target="_blank" title="Click to know more about 16">16</a> J </p>Answer :C</body></html>
36367.

The dimensional formula of the physical quantity whose S.I. unit is "Hm"^(-1) is

Answer» <html><body><p>`<a href="https://interviewquestions.tuteehub.com/tag/ml-548251" style="font-weight:bold;" target="_blank" title="Click to know more about ML">ML</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>) T^(-2) I^(-2)`<br/>`M <a href="https://interviewquestions.tuteehub.com/tag/l-535906" style="font-weight:bold;" target="_blank" title="Click to know more about L">L</a> T^(-2) I^(-2)`<br/>`M^(2) L^(2) T^(-2) I^(-2)`<br/>`ML T^(2) I^(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>
36368.

A ball of mass 400 gm is dropped from a height of 5m. A boy on the ground hits the ball vertically upwards with a bat with an average force of 100N so that it attains a vertical height of 20m. Find the time for which the ball remains in contact with the bat

Answer» <html><body><p>0.12 s <br/>0.24 s <br/>0.36 s <br/>0.48 s</p>Answer :A</body></html>
36369.

A satellite of the earth is revolving in circular orbit with a uniform velocity V. If the gravitational force suddenly disappears, the satelite will

Answer» <html><body><p><a href="https://interviewquestions.tuteehub.com/tag/continue-409821" style="font-weight:bold;" target="_blank" title="Click to know more about CONTINUE">CONTINUE</a> to move with the same velocity in the same orbit. <br/>move <a href="https://interviewquestions.tuteehub.com/tag/tangentially-3098042" style="font-weight:bold;" target="_blank" title="Click to know more about TANGENTIALLY">TANGENTIALLY</a> to the <a href="https://interviewquestions.tuteehub.com/tag/original-1139424" style="font-weight:bold;" target="_blank" title="Click to know more about ORIGINAL">ORIGINAL</a> orbit with velocity V.<br/>fall down with increasing velocity.<br/>come to a stop somewhere in its original orbit. </p>Answer :B</body></html>
36370.

(a) 1 rad = .... Degree (b) 1 rad = ....Min (c) 1 rad = .... Sec

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> :`57.273^(@)<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/> (<a href="https://interviewquestions.tuteehub.com/tag/b-387190" style="font-weight:bold;" target="_blank" title="Click to know more about B">B</a>) 437.3 <br/> (c) 206238''</body></html>
36371.

A particle is projected from the ground with an intial speed of v at an angle of projection theta. The average velocity of the particle between its time of projection and time it reaches highest point of trajectory is

Answer» <html><body><p>`(v)/(2)<a href="https://interviewquestions.tuteehub.com/tag/sqrt-1223129" style="font-weight:bold;" target="_blank" title="Click to know more about SQRT">SQRT</a>(1+2cos^(2)<a href="https://interviewquestions.tuteehub.com/tag/theta-1412757" style="font-weight:bold;" target="_blank" title="Click to know more about THETA">THETA</a>)`<br/>`(v)/(2)sqrt(1+2sin^(2)theta)`<br/>`(v)/(2)sqrt(1+3cos^(2)theta)`<br/>`v <a href="https://interviewquestions.tuteehub.com/tag/cos-935872" style="font-weight:bold;" target="_blank" title="Click to know more about COS">COS</a> theta`</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>
36372.

Radius of level circular track is 20 m. If co­efficient of friction is 0.25, then what will be maximum safe speed ? (g = 9.8 ms^(2))

Answer» <html><body><p></p>Solution :`g= 9.8ms^(<a href="https://interviewquestions.tuteehub.com/tag/2-283658" style="font-weight:bold;" target="_blank" title="Click to know more about 2">2</a>)` <br/> `r=<a href="https://interviewquestions.tuteehub.com/tag/20-287209" style="font-weight:bold;" target="_blank" title="Click to know more about 20">20</a> m` <br/> ` g = 9.8 ms^(-2)` <br/> `v_(<a href="https://interviewquestions.tuteehub.com/tag/ax-889785" style="font-weight:bold;" target="_blank" title="Click to know more about AX">AX</a>)= <a href="https://interviewquestions.tuteehub.com/tag/sqrt-1223129" style="font-weight:bold;" target="_blank" title="Click to know more about SQRT">SQRT</a>(mu rg )` <br/> `= squr(0.25 <a href="https://interviewquestions.tuteehub.com/tag/xx-747671" style="font-weight:bold;" target="_blank" title="Click to know more about XX">XX</a> 20 xx 9.8 ) ` <br/> `=7m//s`</body></html>
36373.

Statement I : Fahrenheit is the smallest unit of measuring temperature. Statement II : Fahrenheit was the first temperature scale used for measuring temperature.

Answer» <html><body><p>Statement I is true, statement <a href="https://interviewquestions.tuteehub.com/tag/ii-1036832" style="font-weight:bold;" target="_blank" title="Click to know more about II">II</a> is true , statement II is a correct <a href="https://interviewquestions.tuteehub.com/tag/explanation-455162" style="font-weight:bold;" target="_blank" title="Click to know more about EXPLANATION">EXPLANATION</a> for statement I.<br/>Statement I is true, statement II is true , statement II is not a correct explanation for statement I.<br/>Statement I is true, <a href="https://interviewquestions.tuteehub.com/tag/statementii-2281366" style="font-weight:bold;" target="_blank" title="Click to know more about STATEMENTII">STATEMENTII</a> is false.<br/>Statement I is false,statement II is true.</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>
36374.

If n is the rigidity modulus, r is the radius, l is the length and C is the moment of the couple, then (2lc)/(pi n r^4)has the dimensions of

Answer» <html><body><p><a href="https://interviewquestions.tuteehub.com/tag/angle-875388" style="font-weight:bold;" target="_blank" title="Click to know more about ANGLE">ANGLE</a> <br/>Length<br/>Mass <br/>Frequency</p>Answer :A</body></html>
36375.

In the question number 97, time taken by the child to go from father to mother and back to father is

Answer» <html><body><p>10 s<br/>20 s<br/>30 s<br/>40 s</p>Solution :Distance between the <a href="https://interviewquestions.tuteehub.com/tag/parents-1147056" style="font-weight:bold;" target="_blank" title="Click to know more about PARENTS">PARENTS</a> = 50 m <br/> Since the parents and child are located on the same <a href="https://interviewquestions.tuteehub.com/tag/belt-895014" style="font-weight:bold;" target="_blank" title="Click to know more about BELT">BELT</a>, the <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 the child as observed by the stationary <a href="https://interviewquestions.tuteehub.com/tag/observer-1127626" style="font-weight:bold;" target="_blank" title="Click to know more about OBSERVER">OBSERVER</a> in either <a href="https://interviewquestions.tuteehub.com/tag/direction-1696" style="font-weight:bold;" target="_blank" title="Click to know more about DIRECTION">DIRECTION</a> (either from mother to father or from father to mother) will be `9 km h^(-1)(= 5/2 m s^(-1))`. <br/> `therfore` Time taken by the child to go father to mother and back to father is <br/> `t = 50/(5/2) + 50/(5/2) = 20 s + 20 s = 40` s.</body></html>
36376.

If coefficient of real expansion of a liquid is 1/5500, the temperature at which its density is 1 % less than density at 0°C is

Answer» <html><body><p>`55.5^(@) <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/>`<a href="https://interviewquestions.tuteehub.com/tag/100-263808" style="font-weight:bold;" target="_blank" title="Click to know more about 100">100</a>^(@) C`<br/>`<a href="https://interviewquestions.tuteehub.com/tag/99-342952" style="font-weight:bold;" target="_blank" title="Click to know more about 99">99</a>^(@) C`<br/>`<a href="https://interviewquestions.tuteehub.com/tag/1-256655" style="font-weight:bold;" target="_blank" title="Click to know more about 1">1</a>^(@) 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>
36377.

What is the vector relation of linear momentum and angular 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> :`vecL=vecrxxvecp`</body></html>
36378.

On which principle equation of continuity based on?

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/conservation-929810" style="font-weight:bold;" target="_blank" title="Click to know more about CONSERVATION">CONSERVATION</a> of <a href="https://interviewquestions.tuteehub.com/tag/mass-1088425" style="font-weight:bold;" target="_blank" title="Click to know more about MASS">MASS</a></body></html>
36379.

A uniform rod of length 2a is placed horizontally on the edge of a table. Initially the centre of mass of the rod is at a distance a/3 from the edge. The rod is released from rest. If the rod slips after it has turned through an angle e. find the coefficient of friction between the rod and the table.

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/mu-566056" style="font-weight:bold;" target="_blank" title="Click to know more about MU">MU</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/tan-1238781" style="font-weight:bold;" target="_blank" title="Click to know more about TAN">TAN</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>`</body></html>
36380.

A river 400m wide is flowing at a rate of 2.0m//s. A boat is sailing at a velocity of 10m//swith respect to the water, in a direction perpendicular to the river.(i) Find the time taken by the boat to reach the opposite bank (ii) How far from the point directly opposite to the starting point does the boat reach the opposite bank (iii) In what direction dies the boat actually move.

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)Time taken to <a href="https://interviewquestions.tuteehub.com/tag/cross-939411" style="font-weight:bold;" target="_blank" title="Click to know more about CROSS">CROSS</a> the river `t= d/V_(y)=(400m)/(10m//s)=40s`<br/>(b)drift `(X)=(v_(x))(t)=(2m//s)(40s)=80m`.<br/> (<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/actual-361632" style="font-weight:bold;" target="_blank" title="Click to know more about ACTUAL">ACTUAL</a> direction of boat , `theta=tan^(-1)((10)/2)=tan^(-1)5`, (<a href="https://interviewquestions.tuteehub.com/tag/downstream-959100" style="font-weight:bold;" target="_blank" title="Click to know more about DOWNSTREAM">DOWNSTREAM</a>)with the river flow.</body></html>
36381.

A simple pendulum of length .l. carries a bob of mass m. If the breaking strenght of the string is 2 mg, the maximumangular amplitude from the vertical can be

Answer» <html><body><p>`<a href="https://interviewquestions.tuteehub.com/tag/0-251616" style="font-weight:bold;" target="_blank" title="Click to know more about 0">0</a>^(@)`<br/>`<a href="https://interviewquestions.tuteehub.com/tag/30-304807" style="font-weight:bold;" target="_blank" title="Click to know more about 30">30</a>^(@)`<br/>`<a href="https://interviewquestions.tuteehub.com/tag/60-328817" style="font-weight:bold;" target="_blank" title="Click to know more about 60">60</a>^(@)`<br/>`90^(@)`</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>
36382.

Asshown in the diagram three masssesm 3m and 5mconnected together lie on a frictionless horizontal surface and pulled to the left by a force f thetension T_(1)in the first stingis 24 N find (i) acceleartion of the system (ii) tension in the second string and (iii) force f

Answer» <html><body><p></p>Solution :(i) Tension`T_(1)` of <a href="https://interviewquestions.tuteehub.com/tag/24-295400" style="font-weight:bold;" target="_blank" title="Click to know more about 24">24</a> Npullsthe masses<br/> (<a href="https://interviewquestions.tuteehub.com/tag/3m-310999" style="font-weight:bold;" target="_blank" title="Click to know more about 3M">3M</a>+5m) withacceleration a. <br/> `:.24 = (3m +5m) a ` ro `a=(3)/(m)` <br/> (ii)Tension `T_(2) `pullsmass5mwithacceleration `(3)/(m)` <br/> `:., T_(2) = 5m xx (3)/(m ) = 15 <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/> (<a href="https://interviewquestions.tuteehub.com/tag/iii-497983" style="font-weight:bold;" target="_blank" title="Click to know more about III">III</a>)`F= (m+3m + 5m) a = 9m xx (3)/(m) = <a href="https://interviewquestions.tuteehub.com/tag/27-298706" style="font-weight:bold;" target="_blank" title="Click to know more about 27">27</a> N`</body></html>
36383.

According to the experiment of Ingen Hauze the relation between the thermal conductivity of a metal rod is K and the length of the rod whenever the wax melt is

Answer» <html><body><p>`<a href="https://interviewquestions.tuteehub.com/tag/k-527196" style="font-weight:bold;" target="_blank" title="Click to know more about K">K</a>//<a href="https://interviewquestions.tuteehub.com/tag/l-535906" style="font-weight:bold;" target="_blank" title="Click to know more about L">L</a>` = <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/>`K^(<a href="https://interviewquestions.tuteehub.com/tag/2-283658" style="font-weight:bold;" target="_blank" title="Click to know more about 2">2</a>)//l` = constant<br/>`K//l^(2)` = constant<br/>`K l` = constant</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>
36384.

A child swimming on a swing in sitting position stands up, then the time period of swing will

Answer» <html><body><p>Increase<br/>Decrease<br/>Remains same <br/>Increase if the child is <a href="https://interviewquestions.tuteehub.com/tag/long-537592" style="font-weight:bold;" target="_blank" title="Click to know more about LONG">LONG</a> and <a href="https://interviewquestions.tuteehub.com/tag/decreases-946143" style="font-weight:bold;" target="_blank" title="Click to know more about DECREASES">DECREASES</a> if <a href="https://interviewquestions.tuteehub.com/tag/thee-706373" style="font-weight:bold;" target="_blank" title="Click to know more about THEE">THEE</a> child is short</p>Answer :B</body></html>
36385.

Definespecificheat capacityatconstantvolume.

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> :(i)The amountof heatenergyrequiredtoraisethetemperatureof onekgofa substanceby 1 Kof `1 ^@ C `bykeepingthe volumeconstantis calledspecificheatcapacityat constantvolume.<br/>(ii )the amount ofheatrequiredto risethetemperatureofonemoleof asubstanceby 1 K`1^@ C `at constantvolumeis calledmolarspecificheatcapacityat constantvolume.<br/>(<a href="https://interviewquestions.tuteehub.com/tag/iii-497983" style="font-weight:bold;" target="_blank" title="Click to know more about III">III</a> )applicationof lawof equiparition <a href="https://interviewquestions.tuteehub.com/tag/energy-15288" style="font-weight:bold;" target="_blank" title="Click to know more about ENERGY">ENERGY</a> inspecificheatofa gasMeyer.srelation`C_P -C_V =R ` concectsthe twospecific heatsfor one mole of anideal gas .<br/>Equipartitionlaw of energy is <a href="https://interviewquestions.tuteehub.com/tag/usedto-1441140" style="font-weight:bold;" target="_blank" title="Click to know more about USEDTO">USEDTO</a> calculatethe valueof `C_P- C_V` andthe rationbetweenthem`<a href="https://interviewquestions.tuteehub.com/tag/gamma-470142" style="font-weight:bold;" target="_blank" title="Click to know more about GAMMA">GAMMA</a>= (C_p )/( C_V) ` here ` gamma `is calledadiabaticexponent. <br/> <img src="https://d10lpgp6xz60nq.cloudfront.net/physics_images/FM_PHY_XI_SP_05_E01_041_S01.png" width="80%"/></body></html>
36386.

Sand is falling on a coveyor belt at the rate of 5kgs^(-1). The extra power required to move the belt with a velocity of 6ms^(-1) is,

Answer» <html><body><p>30 <a href="https://interviewquestions.tuteehub.com/tag/w-729065" style="font-weight:bold;" target="_blank" title="Click to know more about W">W</a> <br/>180 W <br/><a href="https://interviewquestions.tuteehub.com/tag/150-275254" style="font-weight:bold;" target="_blank" title="Click to know more about 150">150</a> W <br/>1.2 W </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>
36387.

Let omega be the angular velocity of the earth's rotation about its axis. An object weighted by a spring balance gives the same reading at the equator as at a height h above the poles (h lt lt R). The value of h is

Answer» <html><body><p>`(<a href="https://interviewquestions.tuteehub.com/tag/omega-585625" style="font-weight:bold;" target="_blank" title="Click to know more about OMEGA">OMEGA</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>) R^(2))/(g)`<br/>`(omega^(2) R^(2))/(2g)`<br/>`(2omega^(2) R^(2))/(g)`<br/>`(sqrt(<a href="https://interviewquestions.tuteehub.com/tag/rg-1188560" style="font-weight:bold;" target="_blank" title="Click to know more about RG">RG</a>))/(omega)`</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>
36388.

After perfectly inelastic collision between two identical particles moving with same speed in different directions, the speed of the particles became half the initial speed. The angle betweenthe velocities of the two before collision is

Answer» <html><body><p>`<a href="https://interviewquestions.tuteehub.com/tag/60-328817" style="font-weight:bold;" target="_blank" title="Click to know more about 60">60</a>^(@)`<br/>`<a href="https://interviewquestions.tuteehub.com/tag/45-316951" style="font-weight:bold;" target="_blank" title="Click to know more about 45">45</a>^(@)`<br/>`120^(@)`<br/>`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> :C</body></html>
36389.

Two bodies of masses 4 kg and 16 kg ar at rest. The ratio of times for which the same force must act on them to produce the same kinetic energy in both of them is

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> : <a href="https://interviewquestions.tuteehub.com/tag/4-311707" style="font-weight:bold;" target="_blank" title="Click to know more about 4">4</a>`<br/>`<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`<br/>`1 : 2`<br/>`4 : 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 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>
36390.

A capilaary tube of radius 0.35cm is dipped in water. To what height will water inside the capilary raise? (Given S.T. of water =0.072 Nm^(-1), theta between water-glass contact theta=0^(@))

Answer» <html><body><p></p>Solution :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, for water-glass, `theta=0^(@), cos 0^(@)=<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/> and `T=1/2 (pgr(h+r/3))/(cos theta)=1/2 xx 10^(3) xx 9.8 xx 0.035 xx 10^(-2)(<a href="https://interviewquestions.tuteehub.com/tag/3h-310742" style="font-weight:bold;" target="_blank" title="Click to know more about 3H">3H</a>+0.035 xx 10^(-2))/(3)` <br/> `=0.072=0.517(3h+0.035 xx 10^(-2))` <br/> i.e, `3h+0.035 xx 10^(-2)=0.126` <br/> 3h=(0.126)-(0.0035) <br/> `h=(0.2157)/(3)=h=0.0419m`</body></html>
36391.

A satellite is revolving in a circular orbit of radius R. Ratio of KE and its PE is (only magnitude)

Answer» <html><body><p>`1:4`<br/>`2:1`<br/>`3:2`<br/>`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> :D</body></html>
36392.

Fill in the blanks using the words from the list appended with each statement For solid of elastic modulus of rigidity, the shearing force is proportional to…..while for fluids it is proportional to…….(shear strain/ rate of shear strain).

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/shear-1205062" style="font-weight:bold;" target="_blank" title="Click to know more about SHEAR">SHEAR</a> <a href="https://interviewquestions.tuteehub.com/tag/strain-17653" style="font-weight:bold;" target="_blank" title="Click to know more about STRAIN">STRAIN</a>, <a href="https://interviewquestions.tuteehub.com/tag/rate-1177476" style="font-weight:bold;" target="_blank" title="Click to know more about RATE">RATE</a> of shear strain</body></html>
36393.

For the above problem, the direction of the gravitational intensity at an arbitrary point P is indicated by the arrow (i) d, (ii) e, (iii) f, (iv) g.

Answer» <html><body><p>&lt;<a href="https://interviewquestions.tuteehub.com/tag/p-588962" style="font-weight:bold;" target="_blank" title="Click to know more about P">P</a>&gt;</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> :Forthese <a href="https://interviewquestions.tuteehub.com/tag/two-714195" style="font-weight:bold;" target="_blank" title="Click to know more about TWO">TWO</a> problems, complete the hemisphere to sphere. At both P, and C, potential is constant and <a href="https://interviewquestions.tuteehub.com/tag/hence-484344" style="font-weight:bold;" target="_blank" title="Click to know more about HENCE">HENCE</a> intensity = 0. <a href="https://interviewquestions.tuteehub.com/tag/therefore-706901" style="font-weight:bold;" target="_blank" title="Click to know more about THEREFORE">THEREFORE</a>, for the hemisphere, (c) and (e) are correct.</body></html>
36394.

A particle is subjected to two simple harmonic motions given by x_1 = 2.0 sin(100 pi t) and x_2= 2.0 sin(120 pi t+pi//3) where x is in centimeter and t in second. Find the displacement of the particle at t=0.025.

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> :`0.27 <a href="https://interviewquestions.tuteehub.com/tag/cm-919986" style="font-weight:bold;" target="_blank" title="Click to know more about CM">CM</a>`</body></html>
36395.

A particle is subjected to two simple harmonic motions given by x_1 = 2.0 sin(100 pi t) and x_2= 2.0 sin(120 pi t+pi//3) where x is in centimeter and t in second. Find the displacement of the particle at t= 0.0125.

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> :`-2.41 <a href="https://interviewquestions.tuteehub.com/tag/cm-919986" style="font-weight:bold;" target="_blank" title="Click to know more about CM">CM</a> `</body></html>
36396.

Statement - A : The net acceleration of a particle in circular motion is always along the radius of the circle towards the centre Statement - B : The velocity vector of a particle at a point is always along the tangent to the path of the particle at that point

Answer» <html><body><p>A only <a href="https://interviewquestions.tuteehub.com/tag/true-713260" style="font-weight:bold;" target="_blank" title="Click to know more about TRUE">TRUE</a> <br/><a href="https://interviewquestions.tuteehub.com/tag/b-387190" style="font-weight:bold;" target="_blank" title="Click to know more about B">B</a> only true <br/>Both A &amp; B are true <br/>Both A &amp; B are false</p>Answer :B</body></html>
36397.

Two circular rings of equal mass and radius are placed in such a way that their centres coincide but their planes are mutually perpendicular. Find the moment of inertia of the system when the system is rotated about the diameter of one of the rings.

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> :M.I of ring about its <a href="https://interviewquestions.tuteehub.com/tag/centre-912170" style="font-weight:bold;" target="_blank" title="Click to know more about CENTRE">CENTRE</a> `=MR^(2)` <br/> M.1 of a ring aout its <a href="https://interviewquestions.tuteehub.com/tag/diameter-950836" style="font-weight:bold;" target="_blank" title="Click to know more about DIAMETER">DIAMETER</a> `=(MR^(2))/(2)` <br/> `:.I=MR^(2)+(MR^(2))/(2)=(3MR^(2))/(2)`</body></html>
36398.

Two simple pendulums have time periods ‘T’ and 5T/4. They start vibrating at the same instant from the mean position in the same phase. The phase difference between them when the pendulum with higher time period completes one oscillation is

Answer» <html><body><p>`<a href="https://interviewquestions.tuteehub.com/tag/30-304807" style="font-weight:bold;" target="_blank" title="Click to know more about 30">30</a>^@`<br/>`<a href="https://interviewquestions.tuteehub.com/tag/45-316951" style="font-weight:bold;" target="_blank" title="Click to know more about 45">45</a>^@`<br/>`<a href="https://interviewquestions.tuteehub.com/tag/60-328817" style="font-weight:bold;" target="_blank" title="Click to know more about 60">60</a>^@`<br/>`<a href="https://interviewquestions.tuteehub.com/tag/90-341351" style="font-weight:bold;" target="_blank" title="Click to know more about 90">90</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> :D</body></html>
36399.

The velocity of a boat in still water is 10 m/s. If water flows in the river with a velocity of 6 m/s what is the difference in times taken to cross the river in the shortest path and the shortest time. The width of the river is 80 m

Answer» <html><body><p>`1s` <br/>`10 s ` <br/>`(<a href="https://interviewquestions.tuteehub.com/tag/sqrt3-3056952" style="font-weight:bold;" target="_blank" title="Click to know more about SQRT3">SQRT3</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>) s ` <br/>`<a href="https://interviewquestions.tuteehub.com/tag/2s-301125" style="font-weight:bold;" target="_blank" title="Click to know more about 2S">2S</a> ` </p>Answer :D</body></html>
36400.

Assertion : SI system of units is a coherent system of units. Reason : In this system, all the derived units can be easily obtained from basic and supplementary units.

Answer» <html><body><p><a href="https://interviewquestions.tuteehub.com/tag/assertion-384238" style="font-weight:bold;" target="_blank" title="Click to know more about ASSERTION">ASSERTION</a> is true and <a href="https://interviewquestions.tuteehub.com/tag/reason-620214" style="font-weight:bold;" target="_blank" title="Click to know more about REASON">REASON</a> is false<br/>Assertion is false and reason is true.<br/>Assertion is true and reason 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 assertion<br/>Assertion is true and reason is true but not the correct explanation of assertion.</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>