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

Question # 2

Which one is conservative force

Question # 3

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 # 4

The work performed on an object does not depend on:

Question # 5

Work is a Quantity

Question # 6

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

Question # 7

Work is always done on a body when:

Question # 8

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

Question # 9

Work done in lower and bucket into the well is:

Question # 10

Which force is not a conservative force?

Question # 11

A two Kg block is held 1 m above the floor for 50 seconds, the work done is:

Question # 12

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 # 13

A solar cell converts energy of the Sun into:

Question # 14

Work done is maximum when angle between force and displacement is

Question # 15

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:`

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ECAT Physics Chapter 4 Important MCQ's

Sr.# Question Answer
1 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
2 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:
A. Power
B. Work
C. Pressure
D. None of these
3 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
4 When velocity of moving body is doubled, the quantity which is also doubled is its:
A. K.E.
B. Acceleration
C. Momentum
D. P.E.
5 The commercial unit of electrical energy is :
A. K Watt
B. KWH
C. Horse power
D. Joule
6 When a body 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
7 The space around the earth within which it expects a force of attraction on other bodies is known as:
A. Nuclear field
B. Conservative field
C. Electric field
D. Gravitational field
8 The space around the earth in which its gravitational force acts on a body is called
A. Electric Field
B. Gravitational field
C. Magnetic field
D. Conservative field
9 Work is always done on a body when:
A. A force acts on it
B. It moves through certain distance
C. None of A or B is correct
D. Both A and B is correct
10 1 J = ________?
A. 107erges
B. 10-7erges
C. 105erges
D. 10-5erges

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