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 space around the earth within which it expects a force of attraction on other bodies is known as:

Question # 2

Which of the following type of force can do no work on the particle on which it acts:

Question # 3

The work done by a force, keeping an object in circular motion with constant speed is:

Question # 4

When two protons are brought are brought closer potential energy of both of them:

Question # 5

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 # 6

A body moves a distance of 10 m along a straight line under the action of a force of 5 N and work done is 25J. The angle which the force makes the direction of motion will be:

Question # 7

Work-energy principle states that work done on the body by applied force is equal to change in:

Question # 8

If force and displacement are in opposite direction, the work done is taken as

Question # 9

The tidal energy is due to gravitational pull of :

Question # 10

The work done on the body will be zero if:

Question # 11

The dimensions of work

Question # 12

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

Question # 13

Work done is independent of path followed in _______

Question # 14

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

Question # 15

Tick the conservation force:

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ECAT Physics Chapter 4 Important MCQ's

Sr.# Question Answer
1 The Space around the Earth within which it exerts a force of attraction on other bodies is known as
A. Nuclear field
B. Conservative field
C. Electric field
D. Gravitational field
2 Work is a always done on a body when
A. A force acts on it
B. It moves through certain distance
C. None of A or B is correct
D. Both A and B are correct
3 A labourer carrying a distance a load on his head moves from rest on a horizontal road to another point where he comes to rest. He has done:`
A. Minimum work
B.
Maximum work
C. Zero work
D. Negative work
4 When two protons are brought are brought closer potential energy of both of them:
A. Increases
B. Decreases
C. Remains same
D. None of these
5 Which of the following type of force can do no work on the particle on which it acts:
A. Frictional force
B. Gravitational force
C. Electric force
D. Centripetal force
6 Work done is maximum when angle between force and displacement is:
A. 0°
B. 90°
C. 180°
D. None of these
7 Work is a scalar product of
A. Force, Velocity
B. Velocity, Displacement
C. Force, Displacement
D. Force, Momentum
8 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. 0.5 J
B. 2 J
C. 0.25 J
D. 1 J
9 The space around the earth in which its gravitational force acts on a body is called
A. Electric Field
B. Gravitational field
C. Magnetic field
D. Conservative field
10 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

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