ECAT Pre Computer Science Chapter 4 MCQ Test With Answer

MCQ's Test For ECAT Physics Chapter 4 Work and Energy

Try The 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

A solar cell converts energy of the Sun into:

Question # 3

The value of escape velocity of Earth planet comes out to be:

Question # 4

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 # 5

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

Question # 6

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

Question # 7

The angle between centripetal force and displacement of the body moving in a circle is:

Question # 8

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

Question # 9

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

Question # 10

Work is a Quantity

Question # 11

The work performed on an object does not depend on

Question # 12

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:

Question # 13

The work performed on an object does not depend on:

Question # 14

Work is a always done on a body when

Question # 15

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

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ECAT Physics Chapter 4 Important MCQ's

Sr.# Question Answer
1 The tidal energy is due to gravitational pull of :
A. sun
B. moon
C. Mars
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 Work is a:
A. Scalar quantity
B. Vector quantity
C. Base quantity
D. None of these
4 When the body is moves against the force of friction on a horizontal plane, the work done by the body is:
A. Positive
B. Negative
C. Zero
D. None of these
5 The power of an electric generating station is expressed in:
A. Kilo Jule
B. Kilowatt-hour
C. Kilo watt
D. Watt
6 1 J = ________?
A. 107erges
B. 10-7erges
C. 105erges
D. 10-5erges
7 The work done by a force, keeping an object in circular motion with constant speed is:
A. Zero J
B. 1 J
C. 0.1 J
D. 0.01 J
8 Watt x second is unit of:
A. Force
B. Work
C. Power
D. None of these
9 When force and displacement are perpendicular to each other than work is equal to
A. Unity
B. Infinity
C. Zero
D. -Fd
10 A solar cell is made from:
A. Iron
B. Silicon
C. Germanium
D. Copper

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