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 performed on an object does not depend on:

Question # 2

When force and displacement are perpendicular to each other than work is equal to

Question # 3

Which one is conservative force

Question # 4

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

Question # 5

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:

Question # 6

Work is always done on a body when:

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 in 25J. The angle which the force makes with the direction of motion will be

Question # 8

The work done on the body will be zero if:

Question # 9

Work is a:

Question # 10

Watt x second is unit of:

Question # 11

Work is always done on a body when:

Question # 12

If we draw a graph between d(along x-axis) and F (along y-axis) and get a straight line horizontal to x-axis then area under this straight line represents:

Question # 13

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

Question # 14

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

Question # 15

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:

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ECAT Physics Chapter 4 Important MCQ's

Sr.# Question Answer
1 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
2 Work done on a body by gravity in lifting it up to certain height is
A. Maximum
B. Minimum
C. Zero
D. Negative
3 If one newton force acts on a body and displaces the body through 1m work done on body is
A. 1 dyne
B. 1 joule
C. 1KJ
D. 1 Watt
4 Work is a
A. Scalar quantity
B. Vector quantity
C. Base quantity
D. None of these
5 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°
6 Work is a scalar product of
A. Force, Velocity
B. Velocity, Displacement
C. Force, Displacement
D. Force, Momentum
7 The power of an electric generating station is expressed in:
A. Kilo Jule
B. Kilowatt-hour
C. Kilo watt
D. Watt
8 Escape velocity from surface of Moon as compared to that from Earth surface is:
A. Greater
B. Smaller
C. Equal
D. None of thes
9 Work done is maximum when angle between force and displacement is
A. 0°
B. 90°
C. 180°
D. None of these
10 Which one is conservative force
A. Electric force
B. Frictional force
C. Normal force
D. Air resistance

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