ECAT Pre Computer Science Chapter 4 MCQ Test With Answer

MCQ's Test For ECAT Physics Chapter 4 Work and Energy

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ECAT Physics Chapter 4 Work and Energy

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Question # 1

The value of escape velocity of Earth planet comes out to be:

Question # 2

Work is a:

Question # 3

Which force is not a conservative force:

Question # 4

The work performed on an object does not depend on:

Question # 5

A 100 kg car is moving at a speed of 10 m/sec and comes to rest after covering a distance of 50 m. the amount of work done against friction is:

Question # 6

Work is product of:

Question # 7

The consumption of energy by a 60 W bulb in 2 minutes is:

Question # 8

Escape velocity from surface of Moon as compared to that from Earth surface is:

Question # 9

A laborer carrying a load on his head moves from the rest on a horizontal road to another point where he comes to rest. He has done:

Question # 10

Work has the dimensions as that of

Question # 11

When the body is moves against the force of friction on a horizontal plane, the work done by the body is:

Question # 12

Work done is maximum when angle between force and displacement is

Question # 13

When a falling body hits ground, its KE changes to _____ energy.

Question # 14

When a force of 0.5 N displaces a body through a distance of 2m in the direction of force, the work done is

Question # 15

The work done moving a body between two points in a conservation field is independent of the:

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ECAT Physics Chapter 4 Important MCQ's

Sr.# Question Answer
1 Work done is independent of path followed in _______
A. Gravitational field
B. Magnetic field
C. Electric field
D. All of these
2 The tidal energy is produced due to rotation of Earth relative to:
A. Moon
B. Sun
C. Oceans
D. Water
3 Escape velocity from surface of Moon as compared to that from Earth surface is:
A. Greater
B. Smaller
C. Equal
D. None of thes
4 Work done is maximum when angle between force and displacement is:
A. 0°
B. 90°
C. 180°
D. None of these
5 Work is a scalar product of
A. Force, Velocity
B. Velocity, Displacement
C. Force, Displacement
D. Force, Momentum
6 If one newton force acts on a body and displaces the body through 1m work done on body is
A. 1 dyne
B. 1 joule
C. 1KJ
D. 1 Watt
7 When a force of 0.5 N displaces a body through a distance of 2m in the direction of force, the work done is:
A. 2 J
B. 0.25 J
C. 1 J
D. 0.5 J
8 If force and displacement are in opposite direction, the work done is taken as
A. Positive work
B. Negative work
C. Zero work
D. Infinite work
9 1 J = ________?
A. 107erges
B. 10-7erges
C. 105erges
D. 10-5erges
10 The work done on the body will be zero if:
A. No force is applied on the body
B. Force is applied but no displacement
C. Angle between F(force) and d(displacement) is 90°
D. All of these are correct

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