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 Space around the Earth within which it exerts a force of attraction on other bodies is known as

Question # 2

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

Question # 3

Work has the dimensions as that of

Question # 4

Work done along a closed path in a gravitational field is:

Question # 5

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

Question # 6

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

Question # 7

The work performed on an object does not depend on:

Question # 8

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 # 9

SI Unit of work is

Question # 10

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

Question # 11

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 # 12

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 # 13

Work is a:

Question # 14

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

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 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
2 When a falling body hits ground, its KE changes to _____ energy.
A. Potential
B. Chemical
C. Mechanical
D. sound and heat
3 The tidal energy is produced due to rotation of Earth relative to:
A. Moon
B. Sun
C. Oceans
D. Water
4 The work performed on an object does not depend on:
A. Force applied
B. Angle at which force is inclined to the displacement
C. Initial velocity of the object
D. Displacement
5 Work done is maximum when angle between force and displacement is
A. 0°
B. 90°
C. 180°
D. None of these
6 The unit of work in CGS system is
A. Joule
B. Erg
C. Dyne
D. Watt
7 In the force applied to parallel to the direction of motion, then the work done is:
A. Positive
B. Negative
C. Zero
D. None of these
8 The field in which work done in moving a body between two points depends upon the path followed is called:
A. Conservative field
B. Non-conservative field
C. Electric field
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 Tick the conservation force:
A. Tension in a string
B. Air resistance force
C. Elastic spring
D. Frictional force

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