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 expects a force of attraction on other bodies is known as:

Question # 2

Work done on a body by gravity in lifting it up to certain height is

Question # 3

When a falling body hits ground, its KE changes to _____ energy.

Question # 4

A 2 kg block is held 1 m above floor for 50 seconds. The work done is:

Question # 5

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 # 6

Tick the conservative force

Question # 7

The commercial unit of electrical energy is :

Question # 8

Work done is maximum when angle between force and displacement is:

Question # 9

The field in which work done is moving body between two points depends upon the path followed is called:

Question # 10

The dimensions of work

Question # 11

Work done in lower and bucket into the well is:

Question # 12

Work done is maximum when angle between force and displacement is

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

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 # 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 Which of the following types of force can do no work on the particle on which it acts
A. Frictional force
B. Gravitational force
C. Electric force
D. Centripetal force
2 Work done is maximum when angle between force and displacement is:
A. 0°
B. 90°
C. 180°
D. None of these
3 If one newton force acts on a body and displaces the body through 1m work done on body is
A. 1 dyne
B. 1 joule
C. 1KJ
D. 1 Watt
4 Work has a dimension as that of:
A. Torque
B. Angular momentum
C. Linear momentum
D. Power
5 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:
A. 60°
B. 90°
C. 30°
D. 0°
6 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
7 Work done is lowering the bucket into the well is:
A. Zero
B. Positive
C. Negative
D. None of these
8 The tidal energy is due to gravitational pull of :
A. sun
B. moon
C. Mars
D. None of these
9 Work done along a closed path in a gravitational field is:
A. Maximum
B. Minimum
C. Zero
D. Unity
10 Which one is conservative force
A. Electric force
B. Frictional force
C. Normal force
D. Air resistance

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