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

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 # 2

Work done in lower and bucket into the well is:

Question # 3

A 100 Kg car is moving at the speed of 10 m/sec and comes to rest after covering a distance of 50 m. The amount of work done against the friction is:

Question # 4

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

Question # 5

Tick the conservation force:

Question # 6

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 # 7

Work-energy principle states that work done on the body by applied force is equal to change in:

Question # 8

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

Question # 9

Work is always done on a body when:

Question # 10

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

Question # 11

Work has the dimensions as that of

Question # 12

Work is a always done on a body when

Question # 13

Work done by the force of friction is always

Question # 14

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

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 Tick the conservation force:
A. Tension in a string
B. Air resistance force
C. Elastic spring
D. Frictional force
2 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
3 Work is a Quantity
A. Vector
B. Scalar
C. Non-physical
D. None of these
4 SI Unit of work is
A. Nm-1
B. Joule
C. Nms
D. Both a and b
5 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
6 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.
7 A solar cell converts energy of the Sun into:
A. Heat energy
B. Magnetic energy
C. Light energy
D. Sound energy
8 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
9 The types of mechanical energy is/are:
A. Kinetic energy
B. Potential energy
C. Both of these
D. None of these
10 The amount of coal used since 1945 up till now as compared to that used in the whole of history before that is
A. Much more
B. Very small
C. No amount at all
D. None of these

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