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InterviewSolution
This section includes InterviewSolutions, each offering curated multiple-choice questions to sharpen your knowledge and support exam preparation. Choose a topic below to get started.
| 4551. |
Lucu 10 timesnich of the following is not the unit of timeMicro secondb) Leap yearLunar monthsd) Parallactic secon'n modulus of a wire the formula is Y |
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Answer» b) leap year is the correct answer leap year is the right answer leap year is the correct answer. leap year is a correct answer leap year is correct answer leap year is the right answer leap year is the right answer leap year doesn't denote measurement of time leap year is not used to measure time I think option b) Leap year. is correct answer.. Hope it helps you |
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| 4552. |
L. A runner runs 100 m in 10s, then turns around and jogs 50m back towards the starting point in30s. Find his (1) average speed (2) average velocity |
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| 4553. |
why the otmospherp esential for ife |
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Answer» to keep our inner fluids inside as if t her is not outside atmosphere the inner body atmospheric pressure may burst out with all the fluids ex: as the plane lifts some people's nose bleeds |
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| 4554. |
hobrifedistande riedS.body of 2 s. |
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Answer» A.T.Q the body is moving uniformly with a velocity of 10m/s. Acceleration will be zero. They are asking the total distance traveled by the body, using equation of motion. s=ut+1/2at^2 s=10*2+0(as acceleration is zero) s=20m so the total distance traveled by the body is 20m. |
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| 4555. |
If the radius of earth shrinks by 1.5% (massremaining same), then the value of gravitationalacceleration changes by(1) 2%(3) 3%(2) -2%(4) -3% |
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Answer» g = G M / R^2 as, R is decreased by 1.5% So, new Radius , R' = R - 0.015 R = 0.985R So, new g, g' = G M / (0.985R)^2 = 1.0306 G M/ R^2 So, change = 0.0306 % change = 3 % (approx) |
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| 4556. |
15. If the radius of earth shrinks by 1.5% (massremaining same), then the value of gravitationalacceleration changes by(1) 2%(3) 3%(2) -290(4) -3% |
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| 4557. |
21. A 150 m long train is moving with a uniform velocity of 45 km/h. The time taken by the train to cross a bridge oflength 850 m isA) 56 secB) 68 secC) 80 secD) 92 sec412015.46 |
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| 4558. |
material body A of mass m, exerts a force onanother material body of mass m,. If the acc. bea,, the magnitude of the acc. of A is :(A) Zero(C) m,a,/m2 5(B) m,a/m,(D) a2 |
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Answer» Force on B = m2a2 Force on A = m1a1 Eq. the two equations ,( according to Newton's Third Law) => m2a2= m1a1 => a1 = m2a2/m1 hence, correct option is (b) |
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| 4559. |
|15, A ball is dropped from a height of 10 m. If the energy of the ball reduces by 40% after striking the ground,how much high can the ball bounce back? (g 10 ms |
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Answer» Given that the ball is dropped from a height, h1 = 10 mPotential energy at h1 = mgh1Given g =10 m/s2 , h1 = 10 mTherefore the potential energy at h1 = m×10×10 = 100m JOn striking the ground level, the ball looses 40% of its initial energy:i.e. (40/100)× 100m J=40m JThe energy left on striking the ground = 100 m J - 40 m J= 60 m JSo the final energy of the ball , mgh2 = 60m Ji.e h2 = (60 /10) = 6 mHence the ball will bounce back to a height of 6 m |
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| 4560. |
A Carrom board [410 x 4n has the queen at the centre thequeen, hit by the striker moves to thefront edge reboundsand goes in the hole behind the striking line Find the magnitude of displacement of the queen (a) from the centre to thefront edge (b) from the front edge to the hole and (c) fromthe centre to the hole. |
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| 4561. |
Q.2sTwo masses m and M are attached with strings as shown. For the syst455° |
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Answer» please complete the question first |
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| 4562. |
हीरे (Diamond) के प्रति यूनिट रोल में कार्बनपरमाणुओं की संख्या होती है।(A) 1(B) 6(D) 8(c) 4 |
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Answer» , Total no. ofatomspresent in adiamondcubic unit cell is 1 + 3 + 4 = 8 1+3+4=8 |
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| 4563. |
(At highest point, u-0)wo Marks Questions (30 words). Find the change in momentum of a carweighing 1500 kg when its speed increases from 36(2015-0FVWUYX, 91T8TRW)km/h to 72 km/h. |
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| 4564. |
Whichone the folofdependence of theoand why?owing is the correct set-up for studying thee eurrent on the potential difference across a resistor |
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Answer» Option A is rightas here see the polarity of voltmeter and current flow is according to sign |
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| 4565. |
Consider a person of mass m standing on a weighing machine in an elevator. Let his true weight is mgand apparent weight weight is R36.When the elevator is moving up with uniform velocity thenA) R mgB) R> mg |
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| 4566. |
Example 2.31A prismatic circular log of weight 20 and radius ris supported in a horizontal position against a vertical wall by two identicalbrackets like the one shown in Fig. 2.67(a). Each bar AB is hinged to the wallat A and supported at B by a horizontal cable BD. Assuming smooth surfacesat all points ofcon tact, find the value of the angle α that AB should make withthe wall to attain a minimum tension S in each cable BD |
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| 4567. |
(d) The day on which the moon cannot beHomeworke fol owing questions brmoon? |
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Answer» Ans :- Acrescentis a thin, curved shape that's thicker in the middle and tapers to thin points at each end, like the little sliver ofmoonyou might notice in the sky.Crescentwas first used to describe the shape of the waxing, or growingmoon, and if you listen closely you can hear its similarity to increase. |
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| 4568. |
(c) seeps into earthWhat is meant by prebyopia?5. |
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Answer» Presbyopiais a refractive error that develops when your eyes undergo structural changes as a result of the aging process. Your natural lenses, in particular, may lose their flexibility as you age. This can impair the light-focusing process, resulting in visual impairments. |
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| 4569. |
A block of weight Wis supported by three strings asshown in figure. Which of the following relations istrue for tension in the strings? (Here T, T2 and 7,are the tension in the strings A, Band C respectively)135B(2) T, T(3)Te= 7,2 3 |
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Answer» Block of weight W is supported by three strings A,B and CHence the Block is in equilibrium.Hence by applying Lami's theorem we have,T3/sin135=T2/sin90=T1/sin135 T3/sin135=T1/sin135 T3=T1 Hence T3=T1 |
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| 4570. |
What is the value of power if the resistor of1500 Ohms draws a current of 0.08 Amps. |
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Answer» thank u |
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| 4571. |
ar Which is bigger, a coulomb or charge on an electron ?How many electronic charges form one coulomb of18]charge ?Ans. One coulomb, 625 x 10 |
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Answer» an electron is 1 divided by a number with19zeroes coulombs, so hopefully you can imagine how mini-tiny an electron charge is, compared to a Coulomb of charge. This is because the Coulomb is defined as the amount of charge each second through a certain surface, when the current is 1 A (ampere). This is in turn related to the detection of themagneticforce, which is much more feeble and therefore needs a large amount of elementary charge to flow, to be detectable. |
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| 4572. |
Type A. On Quantization of charge1. Which is bigger, a coulomb or charge on an electron ?How many electronic charges form one coulomb ofcharge?[Ans. One coulomb, 6-25 x 1018]mound from a conductor, |
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Answer» A Coulomb is a much bigger charge than the charge of an electron (comparing absolute values, because electrons have a negative charge, whereas a Coulomb is positive). −1 C is equivalent to the charge of approximately 6.242×10^18 electrons. |
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| 4573. |
3. Which is bigger, a coulomb or charge on anelectron? How many electronic charge formone coulomb of charge? |
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| 4574. |
Q4 body is moving along a circular bark of radius 100m tinadistance and displacement:cºAfter half to tation |
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| 4575. |
समान चाल से प्रक्षेपित दो भिन्न प्रक्षेपण कोणों के लिए प्रक्षेप्य की परास R समान है। यदि दोनों प्रक्षेपण कोणों के लिएउड्डयन काल T। और T2 है तो Ti, T2 और R में सम्बन्ध ज्ञात कीजिए ? |
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Answer» are the weights in increasing order or decreasing order from 18 years to 23 years |
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| 4576. |
The Carnot engine operating between temperatures Ti and T has an efficiency of When T2 islowered by 62K its efficiency increases to 1. What are the values of T, and T2 (in Kelvin)? |
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| 4577. |
4. Write the procedure for preparation andstandardization of hydrochloric acid |
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Answer» Hydrochloric Acid Solution Standardization Weigh accurately about 1.5 g of anhydrous sodium carbonate, previously heated at about 270°C for 1 hour. Dissolve it in 100 ml of water and add 0.1 ml of methyl red solution. Add the acid slowly from a burette, with constant stirring, until the solution becomes faintly pink. Heat the solution to boiling, cool and continue the titration. Heat again to boiling and titrate further as necessary until the faint pink color is no longer affected by continued boiling. 1 ml of 1M hydrochloric acid is equivalent to 0.05299 g of Na2CO3. Calculate the molarity of solution by the following formula: Na2CO3 in mg M = ----------------------------------------- Hydrochloric Acid in ml x 52.99 thnku |
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| 4578. |
Under what conditions voltage and current in LCR circuit are in same phase. |
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Answer» Voltage and current in the LCR circuit will be same for a unity impedance. thanks thanks |
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| 4579. |
Show that for delta connections of three phase circuit, the line voltage is equal to the phasevoltage whereas the line current is equal to 1.732 times the phase current. Also drawthe phasor diagrams to support your answer. |
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Answer» thanks for giving |
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| 4580. |
Find the net force from the following diagrams. |
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Answer» a)22-8 in first case= 14 Nb) 9-8= 1N a=22-8 in first case =14Nb=9-8=1N. |
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| 4581. |
11. What do the following symbols mean in circuit diagramsw () -- - |
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Answer» rheostat. and 2nd. is. switch closed 1.Rheostat2.closed switch (i) Variable Resistance(ii) Closed Switch. (i) variable Resistance(ii) closed switch |
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| 4582. |
Newton's first law of motion describes the following(a) Energy(b) Work(c) Inertia(d) Moment of inerti |
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Answer» Option (c);Explanation:Newton's First Lawstates that an object will remain at rest or in uniform motion in a straight line unless acted upon by an external force. It may be seen as a statement about inertia, that objects will remain in their state of motion unless a force acts to change the motion. |
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| 4583. |
A liquid kept in a cylindrical vessel of radius0.3m is rotated with a speed 2r.ps. Thedifference in the height of the liquid at thecentre of the vessel and at it's sides is |
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Answer» 1 |
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| 4584. |
1.Write in detail the qualities of sports. |
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Answer» Qualities of sports are It takes drive. You have to be driven to improve every day. ... It takes discipline. You have to be disciplined. ... It takes competitiveness. You have to be competitive and want to beat your competitors. It takes self-confidence. ... It takes aggressiveness. ... It takes focus. ... It takes commitment. ... It takes good time management. |
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| 4585. |
95.In a capillary tube expertiment, a vertical 30 cmlong capillary tube is dipped in water. The waterrises up to a height of 10 cm due to capillary action.If this experiment is conducted in a freely fallingelevator, the length of the water column becomes: 1(1) 10 cm(2) 20 cm(3) 30 cm(4) Zero |
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Answer» but the answer is 30cm yeah the answer is 30 cm... please look at the solution |
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| 4586. |
Water rises in a vertical capillary tube up to a height of 2 cm. If the tube is inclined atan angle of 60 with the vertical then up to what length the water will rise in the tube1) 2 cm52.2) 4 cm3)«Вст4) 2/2 cnm |
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| 4587. |
78. In a surfacetension experiment with a capillarytube water rises up to 0.1 m. If the same experimentis repeated on an artificial satellite which is revolvinground the earth, water will rise in the capillary tubeup to a height of(1) 0.1 m(2) 0.98 m(3) 9.8 m(4) full length of capillary tube |
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| 4588. |
(10) What will happen to the rise of liquid in acapillary tube if its top end is closed? |
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Answer» No water enters the capillary tube as in case when we immerge an empty jug into a bucket filled with water no water level rises but only the pressure develops inside the container or the capillary tube in this case.... Which means that the compressed air gets trapped in between the closed end and the meniscus if the liquid which helps prevent the rise of liquid in a capillary tube. A LIKE WOULD BE APPRECIATED |
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| 4589. |
Comprehension-A particle moves with decreasing speed along the circleof radius R so that at any moment of time its tangentialand centripetal accelerations are equal in magnitude. Atthe initial moment, t 0, its speed is uChChoose the correct answer:1. The time after which the speed of particle reducesto half of its initial value is2R(3) 2u3R(4) 2u2) The magnitude of tangential acceleration atis2u(2)·3R7u2(4) 36R(3) 9Rhe distance travelled by the particle when itsspeed becomes 37% of its initial value is(2) 2R(4) TR(3) 2RSECTIC |
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Answer» thanks no. 3 ? |
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| 4590. |
SCIENA particle is moving in a circular path of radius rThe displacement after half a circle would be:mr(3) 2rtr |
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| 4591. |
The total mechanical energy of an object of massm projected from surface of earth with escapespeed is36.(1) Zero(2) InfiniteGMmGMm(3) 2R(4) 3R |
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Answer» Mechanical energy is zero only energy existing is potential and kinetic energy. |
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| 4592. |
45.A body is thrown from the surface of the earth with a speed of NGMIR (R -WİM = mass of earth). It rises to a maximum height of:c) 4Rradius anda) R/2b) Rd) 2R |
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Answer» E2=(1/2)mv^2-GMm/R………..(2). Now, E1=E2 ( conservation of energy). Therefore , -GMm/2R=(1/2)mv^2-GMm/R OR (1/2)mv^2=GMm/2R, therefore , v=( GM/R)^1/2 this is case when R=2R |
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| 4593. |
oon: .4xlo aJaolius o moon |
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Answer» our solve karo sahi se |
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| 4594. |
2RThe effective resistance between points P and Q of theelectrical circuit in figure isăĽ2Rr / (R + r)(B) 8R(R-r)/ 3R + r(C) 2r + 4R(D) 5R/2+2rxy-2R2R2R2Rad in scries with a battery in a circuit. The |
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Answer» As it is a wheatstone bridgeso middle resistance can be removedand now |
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| 4595. |
An electron of mass m and charge q is travelling with a speed v along a circular path of radius r atright angles to a unifom of magnetic field B.If speed of the electron is doubled and the magneliofield is halved, then resulting path would have a radius of(A) r/4(C) 2r(B) r/2(D) 4r |
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Answer» R =mv/qB since speed of the electron is doubled and the magnetic field is halved so R =4r |
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| 4596. |
What description matches the alternative fitness principle of recovery? |
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Answer» Ans :- A hard day of intense exercising should be followed by an easier day with a lighterworkout. |
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| 4597. |
s.Whichofthe following are fundamental uoit? ..(a) Newton, (b) candela (c) joule (d) watt16. Bulk modulus is a property of...(a) solid, (b) liquid, (c) gas (d) all of them17. Example of capillary tube is...(a) test tube (b) hose pipe (c) thread (d) all of these |
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Answer» 15) candela16) all of them 17) hose pipe. |
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| 4598. |
2.25Obtain the equivalent capacitance of the network in Fig. 2.35. For a300 V supply, determine the charge and voltage across each capacitor100 pF200 pF200 pFCaC,300 V100 pF |
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Answer» 4+90bjejejkekekkekrkkrkrkrk |
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| 4599. |
7. An inflated balloon was pressed against a wall after it has been rubbedoth. It was fotund that the balloon sticks to thell. What force might be responsible for the attrรกction between the balloonwith a piece of synthetic cland the wall? |
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| 4600. |
An inflated balloon was pressed against a wall after it has been rubbedwith a piece of synthetic cloth. It was found that the balloon sticks to thewall. What force might be responsible for the attraction between the balloonand the wall?7.ter held above |
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Answer» thanks u very much |
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