13232 + Interview Questions in Physics Page 128 InterviewSolution

6351.	Abody is moving unidirectionally under the influence of a source ofconstant power. Its displacement in time tis proportional to(i) (ii) t (iii) (iv)
Answer» A body is moving unidirectionally under the influence of a source of constant power. Its displacement in time t is proportional to (i) (ii) t (iii) (iv)

6351.

Abody is moving unidirectionally under the influence of a source ofconstant power. Its displacement in time tis proportional to(i) (ii) t (iii) (iv)

Answer»

A
body is moving unidirectionally under the influence of a source of
constant power. Its displacement in time t
is proportional to

(i) (ii) t
(iii) (iv)

Discussion

6352.	72.The following is not yhe unit of length a)parsec b)light year c)angstrom d)nano Thanks,
Answer» 72.The following is not yhe unit of length a)parsec b)light year c)angstrom d)nano Thanks,

Discussion

6353.	Prove Newton's first and third law of motion using Newton's second law of motion
Answer» Prove Newton's first and third law of motion using Newton's second law of motion

Discussion

6354.	Which of the following electric circuits will make the strongest electromagnet?
Answer» Which of the following electric circuits will make the strongest electromagnet?

Discussion

6355.	Weight of a body of mass m decreases by 1% when it is raised toheight h above the Earth's surface. If the body is taken to a denth in a mine, then its weight will
Answer» Weight of a body of mass m decreases by 1% when it is raised to height h above the Earth's surface. If the body is taken to a dent h in a mine, then its weight will

Discussion

6356.	Explain why objects moving in fluids must have special shapes.
Answer» Explain why objects moving in fluids must have special shapes.

Discussion

6357.	What are the three requirements for selecting a unit of a physical quantity?
Answer» What are the three requirements for selecting a unit of a physical quantity?

Discussion

6358.	aa closed system: A(s)_ 2B(g) +3C(g) if the partial pressure of C is doubled then partial pressure of B?
Answer» aa closed system: A(s)_ 2B(g) +3C(g) if the partial pressure of C is doubled then partial pressure of B?

Discussion

6359.	Brakes are applied to a truck to produce an acceleration of –10 ms−2. If the truck takes 5 s to stop after applying the brakes, then find the distance covered by the truck before coming to rest.
Answer» Brakes are applied to a truck to produce an acceleration of $- 10 m s^{- 2}$ . If the truck takes $5 s$ to stop after applying the brakes, then find the distance covered by the truck before coming to rest.

Discussion

6360.	find the magnitude of applied force that acts on a body of mass 10 kg for the duration of 5 second to increase its velocity 5 to 10 m/s. if the force is applied for 10 seconds then the find the final velocity of the object
Answer» find the magnitude of applied force that acts on a body of mass 10 kg for the duration of 5 second to increase its velocity 5 to 10 m/s. if the force is applied for 10 seconds then the find the final velocity of the object

Discussion

6361.	An open carriage in a goods train is moving with a uniform velocity of 10 m/s. If the rain adds water with zero velocity at the rate of 5 kg/s, then the additional force required by the engine to maintain the same velocity of the train is (1) 0.5 N (2) 20 N (3) 50 N (4) Zero
Answer» An open carriage in a goods train is moving with a uniform velocity of 10 m/s. If the rain adds water with zero velocity at the rate of 5 kg/s, then the additional force required by the engine to maintain the same velocity of the train is (1) 0.5 N (2) 20 N (3) 50 N (4) Zero

Discussion

6362.	Question 1What are wavelength, frequency, time period and amplitude of a sound wave?
Answer» Question 1 What are wavelength, frequency, time period and amplitude of a sound wave?

Discussion

6363.	Arrange the velocity in ascending order. 18 km/s,4000km/s,180km/mt
Answer» Arrange the velocity in ascending order. 18 km/s,4000km/s,180km/mt

Discussion

6364.	Monochromatic light is refracted from air into glass of refractive index μ. The ratio of the wavelengths of incident and refracted waves is
Answer» Monochromatic light is refracted from air into glass of refractive index $μ$ . The ratio of the wavelengths of incident and refracted waves is

Discussion

6365.	Why does a piece of ice when touched with hand appear cold?.
Answer» Why does a piece of ice when touched with hand appear cold?.

Discussion

6366.	Read the given statements and select the correct option. Statement 1 : If one litre of water at 40C is mixed with one litre of water at 50C, the final temperature of the mixture will be between 40C and 50C. Statement 2 : The temperature of mixture of two liquids does not depend on their masses. A. Both statements 1 and 2 are true and statement 2 is the correct explanation of statement 1. Both statements 1 and 2 are true, but statement 2 is not the correct explanation of statement 1. tement 1 is true but statement 2 is false. D. Statement is-false but statement 2 is true.
Answer» Read the given statements and select the correct option. Statement 1 : If one litre of water at 40C is mixed with one litre of water at 50C, the final temperature of the mixture will be between 40C and 50C. Statement 2 : The temperature of mixture of two liquids does not depend on their masses. A. Both statements 1 and 2 are true and statement 2 is the correct explanation of statement 1. Both statements 1 and 2 are true, but statement 2 is not the correct explanation of statement 1. tement 1 is true but statement 2 is false. D. Statement is-false but statement 2 is true.

Discussion

6367.	A stone projected from ground with certain speed at an angle (thita) with horizontal attains maximum height h1. When it is projected with same speed at an angle (thita) with vertical attains height h2. The horizontal range of projectile is??
Answer» A stone projected from ground with certain speed at an angle (thita) with horizontal attains maximum height h1. When it is projected with same speed at an angle (thita) with vertical attains height h2. The horizontal range of projectile is??

Discussion

6368.	What is the relational equation between molarity and molality?
Answer» What is the relational equation between molarity and molality?

Discussion

6369.	A ball of mass 1 kg is rolled on a ground with a velocity of 20 m/s and it comes to rest after travelling a distance of 50 m. What is the magnitude of force of friction between the ball and the ground?
Answer» A ball of mass $1 k g$ is rolled on a ground with a velocity of $20 m / s$ and it comes to rest after travelling a distance of $50 m$ . What is the magnitude of force of friction between the ball and the ground?

Discussion

6370.	What is the SI unit of angle?
Answer» What is the SI unit of angle?

Discussion

6371.	a cricket ball of mass 0.5kg is moving with a velocity of 100 m/s, the wavelength associated with itsmotion is
Answer» a cricket ball of mass 0.5kg is moving with a velocity of 100 m/s, the wavelength associated with itsmotion is

Discussion

6372.	Rohit and Ram were firing from their guns.The gun of Rohit was heavier than the gun of Ram. Recoil speed of: a)Rohit's gun is greater than Ram's. b)Rohit's gun is equal to tha of Ram. c)Rohit's gun is less than Ram's. d)Nothing can be said,information is not enough.
Answer» Rohit and Ram were firing from their guns.The gun of Rohit was heavier than the gun of Ram. Recoil speed of: a)Rohit's gun is greater than Ram's. b)Rohit's gun is equal to tha of Ram. c)Rohit's gun is less than Ram's. d)Nothing can be said,information is not enough.

Discussion

6373.	A man is standing on an international space station which is orbiting earth at an altitude 520km with a constant speed 7.6km/h . If the man's weight is 50 kg his acceleration is 1-7.6km/s2 2-7.6m/s2 3-8.4m/s2 4-10m/s2
Answer» A man is standing on an international space station which is orbiting earth at an altitude 520km with a constant speed 7.6km/h . If the man's weight is 50 kg his acceleration is 1-7.6km/s2 2-7.6m/s2 3-8.4m/s2 4-10m/s2

Discussion

6374.	A ball is thrown up from the top of a tower at 20 m/s velocity. It took the ball 6 sec to fall to the bottom. How high is the tower?
Answer» A ball is thrown up from the top of a tower at 20 m/s velocity. It took the ball 6 sec to fall to the bottom. How high is the tower?

6374.

A ball is thrown up from the top of a tower at 20 m/s velocity. It took the ball 6 sec to fall to the bottom. How high is the tower?

Answer»

A ball is thrown up from the top of a tower at 20 m/s velocity. It took the ball 6 sec to fall to the bottom. How high is the tower?

Discussion

6375.	Question 20Draw a curve showing density or pressure variations with respect to distance for a disturbance produced by sound. Mark the position of compression and rarefaction on this curve. Also define wavelengths and time period using this curve
Answer» Question 20 Draw a curve showing density or pressure variations with respect to distance for a disturbance produced by sound. Mark the position of compression and rarefaction on this curve. Also define wavelengths and time period using this curve

Discussion

6376.	the relation between the acceleration and time for an object is given below.calculate the velocity with which the object is movingat t=1s a=3t-4t^2
Answer» the relation between the acceleration and time for an object is given below.calculate the velocity with which the object is movingat t=1s a=3t-4t^2

Discussion

6377.	Calculate the force required to accelerate a car from rest to a velocity of 30 ms−1 in 10 seconds. The mass of the car is 1500 kg.
Answer» Calculate the force required to accelerate a car from rest to a velocity of $30 m s^{- 1}$ in $10$ seconds. The mass of the car is $1500 k g$ .

Discussion

6378.	2. A person moves towards East for 3 m, then towards Northfor 4 m and then moves vertically up by 5 m. What is hisadistance now from the starting point?
Answer» 2. A person moves towards East for 3 m, then towards Northfor 4 m and then moves vertically up by 5 m. What is hisadistance now from the starting point?

Discussion

6379.	the distance between a real object of magnification 1 formed by a concave mirror of focal length f is
Answer» the distance between a real object of magnification 1 formed by a concave mirror of focal length f is

Discussion

6380.	A block of wood is so loaded that it just floats in water at room temperature. If some salt is added to water, then the wood
Answer» A block of wood is so loaded that it just floats in water at room temperature. If some salt is added to water, then the wood

Discussion

6381.	20. A particle moves a distance x in time t according to equation x=1/t+5.The acceleration of particle is proportional to??
Answer» 20. A particle moves a distance x in time t according to equation x=1/t+5.The acceleration of particle is proportional to??

Discussion

6382.	Question 2(b) In Activity 13.7, how do we think the displacement of rod AB will be affected if (ii) a stronger horse-shoe magnet is used
Answer» Question 2(b) In Activity 13.7, how do we think the displacement of rod AB will be affected if (ii) a stronger horse-shoe magnet is used

Discussion

6383.	A body covered a distance of X meters along a semi-circular path. calculate the magnitude of displacement of the body and the ratio of distance to displacement.
Answer» A body covered a distance of X meters along a semi-circular path. calculate the magnitude of displacement of the body and the ratio of distance to displacement.

Discussion

6384.	Derive the relationship F = ma, where each symbol has its usual significance.
Answer» Derive the relationship F = ma, where each symbol has its usual significance.

Discussion

6385.	An object is falling from a terrace which is 20 m high. At what point does it have maximum kinetic energy?
Answer» An object is falling from a terrace which is 20 m high. At what point does it have maximum kinetic energy?

Discussion

6386.	53.Two paper curtains are present at a distance of 100 meters from each other, one divides the A and B at points, p and q respectively, where q is 10 cm below p, if the tablet is horizontally moving while colliding with A. Then the speed of the tablet is almost
Answer» 53.Two paper curtains are present at a distance of 100 meters from each other, one divides the A and B at points, p and q respectively, where q is 10 cm below p, if the tablet is horizontally moving while colliding with A. Then the speed of the tablet is almost

Discussion

6387.	nta body of mass 10kg is projected with velocity at an angle theta with horizontaln ntat the highest point of trajectory body explodes ijnto 2equal parts if one part retraces its path . find the distance of point from point of projection where body hits the groundn
Answer» nta body of mass 10kg is projected with velocity at an angle theta with horizontaln ntat the highest point of trajectory body explodes ijnto 2equal parts if one part retraces its path . find the distance of point from point of projection where body hits the groundn

Discussion

6388.	Why does the mass change when any object is accelerated at or near to the speed of light?? Does this mass increase or decrease??
Answer» Why does the mass change when any object is accelerated at or near to the speed of light?? Does this mass increase or decrease??

Discussion

6389.	Find the dimensions for relative density
Answer» Find the dimensions for relative density

Discussion

6390.	Examples for pressure exerting in less area and the pressure exerting larger area
Answer» Examples for pressure exerting in less area and the pressure exerting larger area

Discussion

6391.	the position of a particle along the x axis at time t is given by x is equal to 1 + t-t^2 the distance travelled by the particle in first 2 seconds is?
Answer» the position of a particle along the x axis at time t is given by x is equal to 1 + t-t^2 the distance travelled by the particle in first 2 seconds is?

Discussion

6392.	Question 2What do you mean by acceleration due to gravity?
Answer» Question 2 What do you mean by acceleration due to gravity?

Discussion

6393.	a car start from rest and moves with uniform acceleration for 4 ms-2 and for 30 sec.it brakes are applied and car comes to rest at 60 sec.the find max and mid velocity magnitude of retardation and distance
Answer» a car start from rest and moves with uniform acceleration for 4 ms-2 and for 30 sec.it brakes are applied and car comes to rest at 60 sec.the find max and mid velocity magnitude of retardation and distance

Discussion

6394.	A van accelerates uniformly and its velocity changes from 5 m/s to 25 m/s in time t. Find its velocity.
Answer» A van accelerates uniformly and its velocity changes from 5 m/s to 25 m/s in time t. Find its velocity.

Discussion

6395.	position of a particle along x-axis at time t is given by x = 1 +t-1². The distance travelled by the particle in first 2 seconds is?Why we just cant put 2 in this equation to find distance?
Answer» position of a particle along x-axis at time t is given by x = 1 +t-1². The distance travelled by the particle in first 2 seconds is? Why we just cant put 2 in this equation to find distance?

Discussion

6396.	how to find the relation between the velocity and tension in motion in a vertical circle by considering it in particle frame of motion i.e in the non inertial frame where we account centrifugal force also?
Answer» how to find the relation between the velocity and tension in motion in a vertical circle by considering it in particle frame of motion i.e in the non inertial frame where we account centrifugal force also?

Discussion

6397.	A particle is moving in a circular path of radius r under the action of a force F. If at any instant the velocity of particle is v, and speed of particle is increasing, then A] F.v=0 B] F.v>0 C] F.v_ 0
Answer» A particle is moving in a circular path of radius r under the action of a force F. If at any instant the velocity of particle is v, and speed of particle is increasing, then A] F.v=0 B] F.v>0 C] F.v<0 D] F.v>_ 0

Discussion

6398.	The mass of a body is M on the earth's surface. What is the mass of the same body on the moon's surface?
Answer» The mass of a body is M on the earth's surface. What is the mass of the same body on the moon's surface?

Discussion

6399.	ntA galvanometer of resistance G,is shunted by a resistance S .To keep the main current in the circuit unchanged ,the resistance to be put in series with the galvanometer is?n ntExplain in detailn
Answer» ntA galvanometer of resistance G,is shunted by a resistance S .To keep the main current in the circuit unchanged ,the resistance to be put in series with the galvanometer is?n ntExplain in detailn

Discussion

6400.	Use the following information to answer the next question. Two bar magnets are stored safely in pairs (as shown in the given figure). Magnetic poles labelled I and II arepoles, and the object labelled III is aobject. The information in which alternative completes the given statement?
Answer» Use the following information to answer the next question. Two bar magnets are stored safely in pairs (as shown in the given figure). Magnetic poles labelled I and II arepoles, and the object labelled III is aobject. The information in which alternative completes the given statement?

6400.

Use the following information to answer the next question. Two bar magnets are stored safely in pairs (as shown in the given figure). Magnetic poles labelled I and II arepoles, and the object labelled III is aobject. The information in which alternative completes the given statement?

Answer»

Use the following information to answer the next question.

Two bar magnets are stored safely in pairs (as shown in the given figure). Magnetic poles labelled I and II arepoles, and the object labelled III is aobject.

The information in which alternative completes the given statement?

Discussion

Explore topic-wise InterviewSolutions in .

Abody is moving unidirectionally under the influence of a source ofconstant power. Its displacement in time tis proportional to(i) (ii) t (iii) (iv)

72.The following is not yhe unit of length a)parsec b)light year c)angstrom d)nano Thanks,

Prove Newton's first and third law of motion using Newton's second law of motion

Which of the following electric circuits will make the strongest electromagnet?

Weight of a body of mass m decreases by 1% when it is raised toheight h above the Earth's surface. If the body is taken to a denth in a mine, then its weight will

Explain why objects moving in fluids must have special shapes.

What are the three requirements for selecting a unit of a physical quantity?

aa closed system: A(s)_ 2B(g) +3C(g) if the partial pressure of C is doubled then partial pressure of B?

Brakes are applied to a truck to produce an acceleration of –10 ms−2​. If the truck takes 5 s to stop after applying the brakes, then find the distance covered by the truck before coming to rest.

find the magnitude of applied force that acts on a body of mass 10 kg for the duration of 5 second to increase its velocity 5 to 10 m/s. if the force is applied for 10 seconds then the find the final velocity of the object

An open carriage in a goods train is moving with a uniform velocity of 10 m/s. If the rain adds water with zero velocity at the rate of 5 kg/s, then the additional force required by the engine to maintain the same velocity of the train is (1) 0.5 N (2) 20 N (3) 50 N (4) Zero

Question 1What are wavelength, frequency, time period and amplitude of a sound wave?

Arrange the velocity in ascending order. 18 km/s,4000km/s,180km/mt

Monochromatic light is refracted from air into glass of refractive index μ. The ratio of the wavelengths of incident and refracted waves is

Why does a piece of ice when touched with hand appear cold?.

A stone projected from ground with certain speed at an angle (thita) with horizontal attains maximum height h1. When it is projected with same speed at an angle (thita) with vertical attains height h2. The horizontal range of projectile is??

What is the relational equation between molarity and molality?

A ball of mass 1 kg is rolled on a ground with a velocity of 20 m/s and it comes to rest after travelling a distance of 50 m. What is the magnitude of force of friction between the ball and the ground?

What is the SI unit of angle?

a cricket ball of mass 0.5kg is moving with a velocity of 100 m/s, the wavelength associated with itsmotion is

Rohit and Ram were firing from their guns.The gun of Rohit was heavier than the gun of Ram. Recoil speed of: a)Rohit's gun is greater than Ram's. b)Rohit's gun is equal to tha of Ram. c)Rohit's gun is less than Ram's. d)Nothing can be said,information is not enough.

A man is standing on an international space station which is orbiting earth at an altitude 520km with a constant speed 7.6km/h . If the man's weight is 50 kg his acceleration is 1-7.6km/s2 2-7.6m/s2 3-8.4m/s2 4-10m/s2

A ball is thrown up from the top of a tower at 20 m/s velocity. It took the ball 6 sec to fall to the bottom. How high is the tower?

Question 20Draw a curve showing density or pressure variations with respect to distance for a disturbance produced by sound. Mark the position of compression and rarefaction on this curve. Also define wavelengths and time period using this curve

the relation between the acceleration and time for an object is given below.calculate the velocity with which the object is movingat t=1s a=3t-4t^2

Calculate the force required to accelerate a car from rest to a velocity of 30 ms−1 in 10 seconds. The mass of the car is 1500 kg.

2. A person moves towards East for 3 m, then towards Northfor 4 m and then moves vertically up by 5 m. What is hisadistance now from the starting point?

the distance between a real object of magnification 1 formed by a concave mirror of focal length f is

A block of wood is so loaded that it just floats in water at room temperature. If some salt is added to water, then the wood

20. A particle moves a distance x in time t according to equation x=1/t+5.The acceleration of particle is proportional to??

Question 2(b) In Activity 13.7, how do we think the displacement of rod AB will be affected if (ii) a stronger horse-shoe magnet is used

A body covered a distance of X meters along a semi-circular path. calculate the magnitude of displacement of the body and the ratio of distance to displacement.

Derive the relationship F = ma, where each symbol has its usual significance.

An object is falling from a terrace which is 20 m high. At what point does it have maximum kinetic energy?

53.Two paper curtains are present at a distance of 100 meters from each other, one divides the A and B at points, p and q respectively, where q is 10 cm below p, if the tablet is horizontally moving while colliding with A. Then the speed of the tablet is almost

nta body of mass 10kg is projected with velocity at an angle theta with horizontaln ntat the highest point of trajectory body explodes ijnto 2equal parts if one part retraces its path . find the distance of point from point of projection where body hits the groundn

Why does the mass change when any object is accelerated at or near to the speed of light?? Does this mass increase or decrease??

Find the dimensions for relative density

Examples for pressure exerting in less area and the pressure exerting larger area

the position of a particle along the x axis at time t is given by x is equal to 1 + t-t^2 the distance travelled by the particle in first 2 seconds is?

Question 2What do you mean by acceleration due to gravity?

a car start from rest and moves with uniform acceleration for 4 ms-2 and for 30 sec.it brakes are applied and car comes to rest at 60 sec.the find max and mid velocity magnitude of retardation and distance

A van accelerates uniformly and its velocity changes from 5 m/s to 25 m/s in time t. Find its velocity.

position of a particle along x-axis at time t is given by x = 1 +t-1². The distance travelled by the particle in first 2 seconds is?Why we just cant put 2 in this equation to find distance?

how to find the relation between the velocity and tension in motion in a vertical circle by considering it in particle frame of motion i.e in the non inertial frame where we account centrifugal force also?

A particle is moving in a circular path of radius r under the action of a force F. If at any instant the velocity of particle is v, and speed of particle is increasing, then A] F.v=0 B] F.v>0 C] F.v_ 0

The mass of a body is M on the earth's surface. What is the mass of the same body on the moon's surface?

ntA galvanometer of resistance G,is shunted by a resistance S .To keep the main current in the circuit unchanged ,the resistance to be put in series with the galvanometer is?n ntExplain in detailn

Use the following information to answer the next question. Two bar magnets are stored safely in pairs (as shown in the given figure). Magnetic poles labelled I and II arepoles, and the object labelled III is aobject. The information in which alternative completes the given statement?

Brakes are applied to a truck to produce an acceleration of –10 ms−2. If the truck takes 5 s to stop after applying the brakes, then find the distance covered by the truck before coming to rest.