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

Area under the force displacement graph gives

Question # 2

Work has a dimension as that of:

Question # 3

Watt x second is unit of:

Question # 4

SI Unit of work is

Question # 5

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

Question # 6

The unit of work in CGS system is

Question # 7

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

Question # 8

Work done by the force of friction is always

Question # 9

The total work done in moving the body up and then down through the same height in a gravitational field is equal to:

Question # 10

Work is always done on a body when:

Question # 11

The work performed on an object does not depend on:

Question # 12

Tick the conservative force

Question # 13

Work done is maximum when angle between force and displacement is

Question # 14

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

Question # 15

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:

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ECAT Physics Chapter 4 Important MCQ's

Sr.# Question Answer
1 1 J = ________?
A. 107erges
B. 10-7erges
C. 105erges
D. 10-5erges
2 Work done is lowering the bucket into the well is:
A. Zero
B. Positive
C. Negative
D. None of these
3 Which force is not a conservative force?
A. Frictional force
B. Gravitational force
C. Electric force
D. Elastic spring force
4 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
5 Work has the dimensions as that of
A. Torque
B. Angular momentum
C. Linear momentum
D. Power
6 Work-energy principle states that work done on the body by applied force is equal to change in:
A. Potential energy
B. Kinetic nergy
C. Linear momentum
D. None of these
7 A boy pulls a toy car through a distance of 5 m by applying a force of 0.5 N, which makes and 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
8 The space around the earth within which it expects a force of attraction on other bodies is known as:
A. Nuclear field
B. Conservative field
C. Electric field
D. Gravitational field
9 Area under the force displacement graph gives
A. Power
B. Work
C. Heat
D. Energy
10 Maximum work is done when force and displacement are
A. Parallel
B. Antiparallel
C. Perpendicular
D. Both a and b

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