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

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 # 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

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

Question # 5

The consumption of energy by a 60 W bulb in 2 minutes is:

Question # 6

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 # 7

The dimensions of work

Question # 8

The amount of coal used since 1945 up till now as compared to that used in the whole of history before that is

Question # 9

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

Question # 10

The work performed on an object does not depend on:

Question # 11

The ultimate source of money sources of energy is:

Question # 12

Work is a

Question # 13

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

Question # 14

If work is done at the rate of 2 k j per second, then total work done is half an hour will be:

Question # 15

Work done in lower and bucket into the well is:

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ECAT Physics Chapter 4 Important MCQ's

Sr.# Question Answer
1 Area under the force displacement graph gives
A. Power
B. Work
C. Heat
D. Energy
2 Teh consumption of energy by a 1000 watt heater in half an hour is:
A. 5 Kwh
B. 0.5 Kwh
C. 2.5 Kwh
D. 3.2 Kwh
3 The tidal energy is due to gravitational pull of :
A. sun
B. moon
C. Mars
D. None of these
4 If force and displacement are in opposite direction, the work done is taken as:
A. Positive work
B. Negative work
C. Zero work
D. Infinite work
5 Work is a scalar product of
A. Force, Velocity
B. Velocity, Displacement
C. Force, Displacement
D. Force, Momentum
6 Watt x second is unit of:
A. Force
B. Work
C. Power
D. None of these
7 The types of mechanical energy is/are:
A. Kinetic energy
B. Potential energy
C. Both of these
D. None of these
8 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.
9 The total work done in moving the body up and then down through the same height in a gravitational field is equal to:
A. mgh
B. Its wight
C. Weight X height
D. Zero
10 Work done is lowering the bucket into the well is:
A. Zero
B. Positive
C. Negative
D. None of these

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