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 force is not a conservative force:

Question # 3

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

Question # 4

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

Question # 5

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

Question # 6

Work is always done on a body when:

Question # 7

Escape velocity from surface of Moon as compared to that from Earth surface is:

Question # 8

Work done is lowering the bucket into the well is:

Question # 9

The power of an electric generating station is expressed in:

Question # 10

The total work done in moving the body up and then down through the same height in a gravitational field is equal to:

Question # 11

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

Question # 12

A solar cell is made from:

Question # 13

A body moves a distance of 10 m along a straight line under the action of a force of 5 N. If the work done is 25 J, the angle which force makes with the direction of motion of a body is:

Question # 14

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

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 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.
2 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
3 A solar cell converts energy of the Sun into:
A. Heat energy
B. Magnetic energy
C. Light energy
D. Sound energy
4 The angle between centripetal force and displacement of the body moving in a circle is:
A. 0°
B. 90°
C. 180°
D. None of these
5 Work has a dimension as that of:
A. Torque
B. Angular momentum
C. Linear momentum
D. Power
6 The work done by a force keeping an object in circular motion with constant speed is:
A. Zero J.
B. 0.1 J
C. 1 J
D. 0.01 J
7 Work has the dimensions as that of
A. Torque
B. Angular momentum
C. Linear momentum
D. Power
8 Work done is independent of path followed in _______
A. Gravitational field
B. Magnetic field
C. Electric field
D. All of these
9 Which one is conservative force
A. Electric force
B. Frictional force
C. Normal force
D. Air resistance
10 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

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