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

Work has the dimensions as that of

Question # 2

The field in which work done in moving a body between two points depends upon the path followed is called:

Question # 3

The energy stored int he water of the dam is:

Question # 4

SI Unit of work is

Question # 5

Work is a

Question # 6

If work is done at the rate of 2 k j per second, then total work done is half an hour will be:

Question # 7

Which force is not a conservative force:

Question # 8

The types of mechanical energy is/are:

Question # 9

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

Question # 10

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

Question # 11

Which one is conservative force

Question # 12

In the force applied to parallel to the direction of motion, then the work done is:

Question # 13

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

Question # 14

Tick the conservation force:

Question # 15

Work has a dimension as that of:

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ECAT Physics Chapter 4 Important MCQ's

Sr.# Question Answer
1 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
2 Work done along a closed path in a gravitational field is:
A. Maximum
B. Minimum
C. Zero
D. Unity
3 The work done by a force, keeping an object in circular motion with constant speed is:
A. Zero J
B. 1 J
C. 0.1 J
D. 0.01 J
4 1 J = ________?
A. 107erges
B. 10-7erges
C. 105erges
D. 10-5erges
5 Work is a scalar product of
A. Force, Velocity
B. Velocity, Displacement
C. Force, Displacement
D. Force, Momentum
6 Work done is independent of path followed in _______
A. Gravitational field
B. Magnetic field
C. Electric field
D. All of these
7 Work done by the force of friction is always
A. Positive
B. Zero
C. Negative
D. Maximum
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 The total work done in moving the body up and then down through the same height in a gravitational field is equal to:
A. mgh
B. Its wight
C. Weight X height
D. Zero
10 If work is done at the rate of 2 k j per second, then total work done is half an hour will be:
A. 0.5 Kwn
B. 2 Kwh
C. 1 Kwh
D. None of these

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