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 done is maximum when angle between force and displacement is

Question # 2

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

Question # 3

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

Question # 4

Work done on a body by gravity in lifting it up to certain height is

Question # 5

Which force is not a conservative force?

Question # 6

Work has a dimension as that of:

Question # 7

Tick the conservation force:

Question # 8

The work performed on an object does not depend on

Question # 9

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

Question # 10

SI Unit of work is

Question # 11

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

Question # 12

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

Question # 13

The unit of work in CGS system is

Question # 14

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

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 Work is a scalar product of
A. Force, Velocity
B. Velocity, Displacement
C. Force, Displacement
D. Force, Momentum
2 When the body is moves against the force of friction on a horizontal plane, the work done by the body is:
A. Positive
B. Negative
C. Zero
D. None of these
3 A body moves a distance of 10 m along a straight line under the action of a force of 5 N. If the work done is 25 J, the angle which force makes with the direction of motion of a body is:
A. 0°
B. 30°
C. 60°
D. 90°
4 The amount of coal used since 1945 up till now as compared to that used in the whole of history before that is
A. Much more
B. Very small
C. No amount at all
D. None of these
5 Work is a
A. Scalar quantity
B. Vector quantity
C. Base quantity
D. None of these
6 The work performed on an object does not depend on:
A. Force applied
B. Angle at which force is inclined to the displacement
C. Initial velocity of the object
D. Displacement
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 done is independent of path followed in _______
A. Gravitational field
B. Magnetic field
C. Electric field
D. All of these
9 SI Unit of work is
A. Nm-1
B. Joule
C. Nms
D. Both a and b
10 The work performed on an object does not depend on:
A. Force applied
B. Angle at which force is inclined to the displacement
C. Initial velocity of the object
D. Displacement

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