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

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:

Question # 2

The work done by a force, keeping an object in circular motion with constant speed is:

Question # 3

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

Question # 4

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

Question # 5

Work is a always done on a body when

Question # 6

Work is a:

Question # 7

The work performed on an object does not depend on:

Question # 8

Watt x second is unit of:

Question # 9

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

Question # 10

Work done in lower and bucket into the well is:

Question # 11

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

Question # 12

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 with the direction of motion will be:

Question # 13

When a force of 0.5 N displaces a body through a distance of 2m in the direction of force, the work done is:

Question # 14

The work done by a force keeping an object in circular motion with constant speed is:

Question # 15

The tidal energy is due to gravitational pull of :

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ECAT Physics Chapter 4 Important MCQ's

Sr.# Question Answer
1 Work done in lower and bucket into the well is:
A. Zero
B. Positive
C. Negative
D. None of these
2 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
3 Work done is independent of path followed in _______
A. Gravitational field
B. Magnetic field
C. Electric field
D. All of these
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:
A. 0°
B. 30°
C. 60°
D. 90°
5 Energy stored in the spring of a watch is called
A. Potential energy
B. Kinetic energy
C. Nuclear energy
D. Elastic potential
6 Which of the following is not a unit of power:
A. J-sec
B. Watt
C. N m/sec
D. Horsepower
7 If work is done at the rate of 2 k j per second, then total work done is half an hour will be:
A. 0.5 Kwn
B. 2 Kwh
C. 1 Kwh
D. None of these
8 Work is a
A. Scalar quantity
B. Vector quantity
C. Base quantity
D. None of these
9 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
10 The total work done in moving the body up and then down through the same height in a gravitational field is equal to:
A. mgh
B. Its wight
C. Weight X height
D. Zero

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