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

Power is a :

Question # 3

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

Question # 4

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

Question # 5

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

Question # 6

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 # 7

The dimensions of work

Question # 8

The tidal energy is produced due to rotation of Earth relative to:

Question # 9

Watt x second is unit of:

Question # 10

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

Question # 11

Work is always done on a body when:

Question # 12

Maximum work is done when force and displacement are

Question # 13

Work is product of:

Question # 14

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

Question # 15

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

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ECAT Physics Chapter 4 Important MCQ's

Sr.# Question Answer
1 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
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:
A. 1.25 J
B. 12.5 J
C. 125 J
D. None of these
3 Which one is conservative force
A. Electric force
B. Frictional force
C. Normal force
D. Air resistance
4 When a falling body hits ground, its KE changes to _____ energy.
A. Potential
B. Chemical
C. Mechanical
D. sound and heat
5 When a force of 0.5 N displaces a body through a distance of 2m in the direction of force, the work done is
A. 0.5 J
B. 2 J
C. 0.25 J
D. 1 J
6 The consumption of energy by a 60 W bulb in 2 minutes is:
A. 2 watt-hour
B. 120 watt-hour
C. 30 watt-hour
D. None of these
7 The ultimate source of money sources of energy is:
A. Sun
B. Air
C. Water
D. Petroleum
8 Work has the dimension as that of:
A. Torque
B. Angular momentum
C. Linear momentum
D. Power
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
A. 60°
B. 90°
C. 30°
D. 0°
10 Work done is maximum when angle between force and displacement is
A. 0°
B. 90°
C. 180°
D. None of these

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