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 labourer carrying a distance a load on his head moves from rest on a horizontal road to another point where he comes to rest. He has done:`

Question # 2

1 J = ________?

Question # 3

Work done is independent of path followed in _______

Question # 4

When two protons are brought are brought closer potential energy of both of them:

Question # 5

Work has the dimensions as that of

Question # 6

The space around the earth within it exerts a force of attraction on other bodies of known as:

Question # 7

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

Question # 8

When a body moves against the force of friction on a horizontal plane, the work done by the body is:

Question # 9

The work performed on an object does not depend on:

Question # 10

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 the direction of motion will be:

Question # 11

The space around the earth within which it expects a force of attraction on other bodies is known as:

Question # 12

Work is a Quantity

Question # 13

Tick the conservation force:

Question # 14

Work done is lowering the bucket into the well is:

Question # 15

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

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ECAT Physics Chapter 4 Important MCQ's

Sr.# Question Answer
1 Work done is independent of path followed in _______
A. Gravitational field
B. Magnetic field
C. Electric field
D. All of these
2 A field in which the work done is moving a body along closed path is zero is called:
A. Nuclear filed
B. Conservative field
C. Gravitational field
D. Non-conservative field
3 The power of an electric generating station is expressed in:
A. Kilo Jule
B. Kilowatt-hour
C. Kilo watt
D. Watt
4 Work is a:
A. Scalar quantity
B. Vector quantity
C. Base quantity
D. None of these
5 Work done is maximum when angle between force and displacement is
A. 0°
B. 90°
C. 180°
D. None of these
6 If force and displacement are in opposite direction, the work done is taken as:
A. Positive work
B. Negative work
C. Zero work
D. Infinte work
7 The ultimate source of money sources of energy is:
A. Sun
B. Air
C. Water
D. Petroleum
8 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°
9 Energy stored in the spring of a watch is called
A. Potential energy
B. Kinetic energy
C. Nuclear energy
D. Elastic potential
10 A 100 Kg car is moving at the speed of 10 m/sec and comes to rest after covering a distance of 50 m. The amount of work done against the friction is:
A. +5 X 101J
B. +5 X 102J
C. +5 X 103J
D. +5 X 104J

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