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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.
| 3501. |
a stone fall freely from rest from a height h and it travel a dis†an ce 9h/25 in the last sec the vlue of h is |
| Answer» a stone fall freely from rest from a height h and it travel a dis†an ce 9h/25 in the last sec the vlue of h is | |
| 3502. |
It is not always possible that momentum is in uniform motion like a tennis player hits a ball with racket but may be ball is in non uniform motion so why do we use “v” in momentum’s formula because velocity is always in uniform |
| Answer» It is not always possible that momentum is in uniform motion like a tennis player hits a ball with racket but may be ball is in non uniform motion so why do we use “v” in momentum’s formula because velocity is always in uniform | |
| 3503. |
In a hydraulic lift, the force exerted on the piston with small cross-sectional area(F1) is less than the force exerted on the piston with large cross-sectional area(F2). Then, |
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Answer» In a hydraulic lift, the force exerted on the piston with small cross-sectional area(F1) is less than the force exerted on the piston with large cross-sectional area(F2). Then, |
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| 3504. |
Upthrust on a body depends on A. The acceleration due to gravity, the density of the liquid B. The volume of the body immersed in the liquid. |
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Answer» Upthrust on a body depends on |
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| 3505. |
Use the following information to answer the next question. A motorcycle is accelerated from rest in such a way that it covers a distance of three kilometres in five minutes. The mass of the motorcycle is 260 kg. What is the change in the momentum of the motorcycle? |
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Answer» Use the following information to answer the next question. A motorcycle is accelerated from rest in such a way that it covers a distance of three kilometres in five minutes. The mass of the motorcycle is 260 kg. What is the change in the momentum of the motorcycle? |
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| 3506. |
two balls of same mass each 20gm trows with velocity 30m/s from a tower of height of 20metre 1st throws with 30degree from x axis up ward and 2nd throws with 30degre from x axis down ward what will be the velocity of two balls just hitting the groun |
| Answer» two balls of same mass each 20gm trows with velocity 30m/s from a tower of height of 20metre 1st throws with 30degree from x axis up ward and 2nd throws with 30degre from x axis down ward what will be the velocity of two balls just hitting the groun | |
| 3507. |
Solve the following examples.a) An object moves 18 m in the first 3 s, 22 m in the next 3 s and 14 m in the last 3 s. What is its average speed?b) An object of mass 16 kg is moving with an acceleration of 3 m/s2 . Calculate the applied force. If the same force is applied on an object of mass 24 kg, how much will be the acceleration?c) A bullet having a mass of 10 g and moving with a speed of 1.5 m/s, penetrates a thick wooden plank of mass 90 g. The plank was initially at rest. The bullet gets embedded in the plank and both move together. Determine their velocity.d) A person swims 100 m in the first 40 s, 80 m in the next 40 s and 45 m in the last 20 s. What is the average speed? |
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Answer» Solve the following examples. a) An object moves 18 m in the first 3 s, 22 m in the next 3 s and 14 m in the last 3 s. What is its average speed? b) An object of mass 16 kg is moving with an acceleration of 3 m/s2 . Calculate the applied force. If the same force is applied on an object of mass 24 kg, how much will be the acceleration? c) A bullet having a mass of 10 g and moving with a speed of 1.5 m/s, penetrates a thick wooden plank of mass 90 g. The plank was initially at rest. The bullet gets embedded in the plank and both move together. Determine their velocity. d) A person swims 100 m in the first 40 s, 80 m in the next 40 s and 45 m in the last 20 s. What is the average speed? |
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| 3508. |
A non-conducting ring of radius R has charge Q distributed unevenly over it. If it rotates with an angular velocity ω, the equivalent current will be |
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Answer» A non-conducting ring of radius R has charge Q distributed unevenly over it. If it rotates with an angular velocity ω, the equivalent current will be |
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| 3509. |
What is the weight of a block of mass 5 kg at the centre of the Earth? (g=9.8 m s−2) |
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Answer» What is the weight of a block of mass 5 kg at the centre of the Earth? (g=9.8 m s−2) |
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| 3510. |
A student has to connect 4 cells of 1.5 V each, to form a battery of voltage 6 V. Choose the correct way of connecting the cells. |
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Answer» A student has to connect 4 cells of 1.5 V each, to form a battery of voltage 6 V. Choose the correct way of connecting the cells. |
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| 3511. |
in a new system of units let the unit of force energy and velocity be 10 n 0.1 J and 100m/s resp.in thew new system find the unit of length mass time |
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Answer» in a new system of units let the unit of force energy and velocity be 10 n 0.1 J and 100m/s resp. in thew new system find the unit of length mass time |
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| 3512. |
39. A hollow pipe of length 0.8 m is closed at one end. At it's open end a 0.5 m long uniform string is vibrating in it's second harmonic and it resonates with the fundamental frequency of the pipe. If the tension in the wire is 50 N and the speed is 320 m/s, the mass of the string is 1) 5 g 2) 10 g 3) 20 g 4) 40 g |
| Answer» 39. A hollow pipe of length 0.8 m is closed at one end. At it's open end a 0.5 m long uniform string is vibrating in it's second harmonic and it resonates with the fundamental frequency of the pipe. If the tension in the wire is 50 N and the speed is 320 m/s, the mass of the string is 1) 5 g 2) 10 g 3) 20 g 4) 40 g | |
| 3513. |
Name the two physical quantities apart from velocity and time which can be obtained from velocity-time graph. |
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Answer» Name the two physical quantities apart from velocity and time which can be obtained from velocity-time graph. |
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| 3514. |
Statement 1: Ram is standing at a distance of 33 m from a wall. He claps and hears the echo of his own clap.Statement 2: Velocity of sound in air is 330 m/s and time of persistence for hearing is 110 of a second. |
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Answer» Statement 1: Ram is standing at a distance of 33 m from a wall. He claps and hears the echo of his own clap. |
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| 3515. |
What is the correct equation representing velocity? X=acoswt(or)x=asinwt |
| Answer» What is the correct equation representing velocity? X=acoswt(or)x=asinwt | |
| 3516. |
The motion represented by the displacement-time graph below is: |
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Answer» The motion represented by the displacement-time graph below is:
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| 3517. |
The far point of a myopic person is 80 cm in front of the eye. What is the nature and power of the lens required to correct the problem? |
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Answer» The far point of a myopic person is 80 cm in front of the eye. What is the nature and power of the lens required to correct the problem? |
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| 3518. |
The thrust F is exerted on area 2 A and thrust 3 F is exerted on area A2. Find the ratio of pressure exerted. |
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Answer» The thrust F is exerted on area 2 A and thrust 3 F is exerted on area A2. Find the ratio of pressure exerted. |
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| 3519. |
What Is Critical Angle? |
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Answer» What Is Critical Angle? |
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| 3520. |
What would happen to the Earth, if the Sun suddenly vanishes? (Neglect the gravitational force due to other planets) |
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Answer» What would happen to the Earth, if the Sun suddenly vanishes? (Neglect the gravitational force due to other planets) |
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| 3521. |
The position versus time graph below represents the motion of an object. Which one of the four graphs below best represents the velocity verses time graph for this object? |
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Answer» The position versus time graph below represents the motion of an object. Which one of the four graphs below best represents the velocity verses time graph for this object? |
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| 3522. |
What is the difference between Form Of Energy and Source Of Energy? |
| Answer» What is the difference between Form Of Energy and Source Of Energy? | |
| 3523. |
Does real gasesfollow charles law at all given condition .Explain |
| Answer» Does real gasesfollow charles law at all given condition .Explain | |
| 3524. |
Derive Newton's first and third law with the help of second law |
| Answer» Derive Newton's first and third law with the help of second law | |
| 3525. |
A mass M is suspended by a weightless string. The horizontal force that is required to displace it until the string makes an angle of 45^° with the initial vertical direction is |
| Answer» A mass M is suspended by a weightless string. The horizontal force that is required to displace it until the string makes an angle of 45^° with the initial vertical direction is | |
| 3526. |
The ignition temperature of the petrol is ______oC.220 |
Answer» The ignition temperature of the petrol is ______oC.
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| 3527. |
A fly was sitting on a block. A man draws a circle of the area 2cm2, enclosing the fly. He then applies a force of 20N and kills it with a flat stick. Calculate the pressure on that area. |
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Answer» A fly was sitting on a block. A man draws a circle of the area 2cm2, enclosing the fly. He then applies a force of 20N and kills it with a flat stick. Calculate the pressure on that area. |
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| 3528. |
Question 3Define 1 J of work. |
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Answer» Question 3 |
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| 3529. |
The pressure P1 at a certain depth in river water and P2 at the same depth in sea water are related as : (a) P1>P2 (b) P1=P2 (c) P1<P2 (d) P1−P2 = atmospheric pressure |
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Answer» The pressure P1 at a certain depth in river water and P2 at the same depth in sea water are related as : |
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| 3530. |
The repeated reflection that results in the persistence of sound is called reverberation. This phenomenon can be observed in: |
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Answer» The repeated reflection that results in the persistence of sound is called reverberation. This phenomenon can be observed in: |
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| 3531. |
Question 4When the electric current is passed through a conducting solution, there is a change of colour of the solution. This indicates(a) the chemical effect of current.(b) the heating effect of current.(c) the magnetic effect of current.(d) the lightning effect of current. |
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Answer» Question 4 When the electric current is passed through a conducting solution, there is a change of colour of the solution. This indicates (a) the chemical effect of current. (b) the heating effect of current. (c) the magnetic effect of current. (d) the lightning effect of current. |
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| 3532. |
Two conducting wires A and B (made of same material) of lengths 1 m and 2 m and area of cross section1 cm^2 and 100 mm^2, respectively, are taken. If the resis†an ce of a wire of length 5 m and thickness 2 cm made of same material as A and B is 5 ohms, then find the resis†an ce of the new wire of length 5 m formed by melting A and B. |
| Answer» Two conducting wires A and B (made of same material) of lengths 1 m and 2 m and area of cross section1 cm^2 and 100 mm^2, respectively, are taken. If the resis†an ce of a wire of length 5 m and thickness 2 cm made of same material as A and B is 5 ohms, then find the resis†an ce of the new wire of length 5 m formed by melting A and B. | |
| 3533. |
A force act for 0.1 s on a body of mass of 2.0kg in Italy at rest . The force in then withdraw and the body moves with a velocity of 2ms-1 . Find the magnitude of force. |
| Answer» A force act for 0.1 s on a body of mass of 2.0kg in Italy at rest . The force in then withdraw and the body moves with a velocity of 2ms-1 . Find the magnitude of force. | |
| 3534. |
Weight of an object is highest at |
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Answer» Weight of an object is highest at |
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| 3535. |
A body of 500 kg/m3 floats in a liquid. It has been noticed that liquid also floats in water ( ρwater=1000 kg/m3). what could be the density of the liquid? |
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Answer» A body of 500 kg/m3 floats in a liquid. It has been noticed that liquid also floats in water ( ρwater=1000 kg/m3). what could be the density of the liquid? |
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| 3536. |
A 60m long train moving on a straight level track passes a pole in 5 sec. Find the speed of the train an the time it will take to cross a 540m long bridge. |
| Answer» A 60m long train moving on a straight level track passes a pole in 5 sec. Find the speed of the train an the time it will take to cross a 540m long bridge. | |
| 3537. |
114.Properties of permanent magnet and electromagnet and properties for material using in making permanent magnet and electromagnet. |
| Answer» 114.Properties of permanent magnet and electromagnet and properties for material using in making permanent magnet and electromagnet. | |
| 3538. |
1 km/ h = ________ m/s |
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Answer» 1 km/ h = ________ m/s |
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| 3539. |
In the determination of Young’s modulus (Y=4 MLgπl d2) by using Searle’s method, a wire of length L=2m and diameter d=0.5mm is used. For a load M=2.5kg, an extension l=0.25mm in the length of the wire is observed. Quantities d and l are measured using a screw gauge and a micrometer, respectively. They have the same pitch of 0.5mm. The number of divisions on their circular scale is 100. The contributions to the maximum probable error of the Y measurement is: |
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Answer» In the determination of Young’s modulus (Y=4 MLgπl d2) by using Searle’s method, a wire of length L=2m and diameter d=0.5mm is used. For a load M=2.5kg, an extension l=0.25mm in the length of the wire is observed. Quantities d and l are measured using a screw gauge and a micrometer, respectively. They have the same pitch of 0.5mm. The number of divisions on their circular scale is 100. The contributions to the maximum probable error of the Y measurement is: |
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| 3540. |
Two soap bubbles A and B are kept in a closed chamber where air is maintained at pressure 8 N/m2. The radii of bubbles A and B are 2 cm and 4 cm respectively. Surface tension of the soap - water solution used to make the bubbles is 0.04 N/m. The ratio nBnA is (where n is the number of moles of air inside the bubble) [Neglect the effect of gravity and assume same temperature] |
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Answer» Two soap bubbles A and B are kept in a closed chamber where air is maintained at pressure 8 N/m2. The radii of bubbles A and B are 2 cm and 4 cm respectively. Surface tension of the soap - water solution used to make the bubbles is 0.04 N/m. The ratio nBnA is (where n is the number of moles of air inside the bubble) [Neglect the effect of gravity and assume same temperature] |
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| 3541. |
The time period of a simple pendulum on earth is 2 s. What will be the time period of same pendulum when it is brought on moon? (Value of g at moon is 1/6 of value of g at earth’s surface: |
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Answer» The time period of a simple pendulum on earth is 2 s. What will be the time period of same pendulum when it is brought on moon? (Value of g at moon is 1/6 of value of g at earth’s surface: |
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| 3542. |
A ball is thrown vertically upward from the top of a building with velocity of 10 m/s. If it takes 4 seconds for the ball to reach ground level, what is the height of the building? |
| Answer» A ball is thrown vertically upward from the top of a building with velocity of 10 m/s. If it takes 4 seconds for the ball to reach ground level, what is the height of the building? | |
| 3543. |
With usual notation, amongst the following the one, which does not represent the dimension of time ? |
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Answer» With usual notation, amongst the following the one, which does not represent the dimension of time ? |
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| 3544. |
Difference between electric potential and potential difference Please tabulate 3 points |
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Answer» Difference between electric potential and potential difference Please tabulate 3 points |
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| 3545. |
Define the terms : (i) oscillation, (ii) amplitude, (iii) frequency, and (iv) time period as related to a simple pendulum. |
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Answer» Define the terms : (i) oscillation, (ii) amplitude, (iii) frequency, and (iv) time period as related to a simple pendulum. |
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| 3546. |
Different types of work done with an example each |
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Answer» Different types of work done with an example each |
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| 3547. |
A beaker is filled with water to its brim. A child while playing drops his ball of mass 1 kg gently into it. He weighs the water displaced and found it to be 1 N. Find the buoyant force experienced by the ball. |
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Answer» A beaker is filled with water to its brim. A child while playing drops his ball of mass 1 kg gently into it. He weighs the water displaced and found it to be 1 N. Find the buoyant force experienced by the ball. |
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| 3548. |
if l1 and l2 are the lengths of air column for the first and second resonance when a tuning fork of frequency n0 is in resonacne with a resonance tube. Then, the speed of sound in air is equal to |
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Answer» if l1 and l2 are the lengths of air column for the first and second resonance when a tuning fork of frequency n0 is in resonacne with a resonance tube. Then, the speed of sound in air is equal to |
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| 3549. |
61. For the one-dimensional motion, described by x = t�sint (a) x (t) > 0 for all t > 0. (b) v (t) > 0 for all t > 0. (c) a (t) > 0 for all t > 0. (d) v (t) lies between 0 and 2 |
| Answer» 61. For the one-dimensional motion, described by x = t�sint (a) x (t) > 0 for all t > 0. (b) v (t) > 0 for all t > 0. (c) a (t) > 0 for all t > 0. (d) v (t) lies between 0 and 2 | |
| 3550. |
A train with cross-sectional area St is moving with speed vt inside a long tunnel of cross-sectional area S0(S0=4St). Assume that almost all the air (density ρ) in front of the train flows back between its sides and the walls of the tunnel. Also, the air flow with respect to the train is steady and laminar. Take the ambient pressure and that inside the train to be p0.If the pressure in the region between the sides of the train and the tunnel walls is p, then p0−p=72Nρv2t.The value of N is |
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Answer» A train with cross-sectional area St is moving with speed vt inside a long tunnel of cross-sectional area S0(S0=4St). Assume that almost all the air (density ρ) in front of the train flows back between its sides and the walls of the tunnel. Also, the air flow with respect to the train is steady and laminar. Take the ambient pressure and that inside the train to be p0.If the pressure in the region between the sides of the train and the tunnel walls is p, then p0−p=72Nρv2t.The value of N is |
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