ECAT Pre Computer Science Chapter 4 MCQ Test With Answer

MCQ's Test For ECAT Physics Chapter 4 Work and Energy

Try The 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 along a closed path in a gravitational field is:

Question # 2

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:

Question # 3

The value of escape velocity of Earth planet comes out to be:

Question # 4

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 # 5

The work performed on an object does not depend on

Question # 6

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 # 7

The work done on the body will be zero if:

Question # 8

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

Question # 9

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 # 10

Which force is not a conservative force?

Question # 11

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

Question # 12

Teh consumption of energy by a 1000 watt heater in half an hour is:

Question # 13

The space around the earth in which its gravitational force acts on a body is called

Question # 14

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

Question # 15

A solar cell is made from:

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ECAT Physics Chapter 4 Important MCQ's

Sr.# Question Answer
1 The Space around the Earth within which it exerts a force of attraction on other bodies is known as
A. Nuclear field
B. Conservative field
C. Electric field
D. Gravitational field
2 Watt x second is unit of:
A. Force
B. Work
C. Power
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 Maximum work is done when force and displacement are
A. Parallel
B. Antiparallel
C. Perpendicular
D. Both a and b
5 Escape velocity from surface of Moon as compared to that from Earth surface is:
A. Greater
B. Smaller
C. Equal
D. None of thes
6 Work is a
A. Scalar quantity
B. Vector quantity
C. Base quantity
D. None of these
7 When a body 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
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 space around the earth within it exerts a force of attraction on other bodies of known as:
A. Nuclear field
B. Conservative field
C. Electric field
D. Gravitational field
10 Work done along a closed path in a gravitational field is:
A. Maximum
B. Minimum
C. Zero
D. Unity

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