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

Question # 2

The types of mechanical energy is/are:

Question # 3

Work done along a closed path in a gravitational field is:

Question # 4

A field in which the work done in moving a body along closed path is zero is called

Question # 5

If one newton force acts on a body and displaces the body through 1m work done on body is

Question # 6

A body moves a distance of 10 m among a straight line under the action of a force of 5 N. If the work done is 25 J, the angle which the force makes with the direction of motion of a body is:

Question # 7

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 # 8

Which of the following is not a unit of power:

Question # 9

Work done is maximum when angle between force and displacement is:

Question # 10

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

Question # 11

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

Question # 12

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

Question # 13

When a wall is pushed by a person very strongly, he has done:

Question # 14

The unit of work in CGS system is

Question # 15

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

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ECAT Physics Chapter 4 Important MCQ's

Sr.# Question Answer
1 The work done moving a body between two points in a conservation field is independent of the:
A. Direction
B. Force applied
C. Path followed by the body `
D. Power
2 Work done by the force of friction is always
A. Positive
B. Zero
C. Negative
D. Maximum
3 A field in which the work done is moving a body along closed path is zero is called:
A. Nuclear filed
B. Conservative field
C. Gravitational field
D. Non-conservative field
4 The tidal energy is due to gravitational pull of :
A. sun
B. moon
C. Mars
D. None of these
5 The dimensions of work
A. [MLT-1]
B. [MLT-2]
C. [ML2T-2]
D. [MLT]
6 A boy pulls a toy car through a distance of 5 m by applying a force of 0.5 N, Which makes an angle of 60° with the horizontal. The work done by the boy is:
A. 1.25 J
B. 12.5 J
C. 125 J
D. None of these
7 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
8 Work is 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 is correct
9 Watt x second is unit of:
A. Force
B. Work
C. Power
D. None of these
10 A 2 kg block is held 1 m above floor for 50 seconds. The work done is:
A. Zero
B. 10.2 J
C. 100 J
D. 980 J

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