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

Watt x second is unit of:

Question # 2

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

Question # 3

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

Question # 4

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

Question # 5

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 # 6

The work performed on an object does not depend on

Question # 7

Most of the geysers occur in:

Question # 8

Work done is maximum when angle between force and displacement is:

Question # 9

Which one is conservative force

Question # 10

Work is a:

Question # 11

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

Question # 12

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 # 13

The work performed on an object does not depend on:

Question # 14

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

Question # 15

The types of mechanical energy is/are:

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ECAT Physics Chapter 4 Important MCQ's

Sr.# Question Answer
1 Work done is lowering the bucket into the well is:
A. Zero
B. Positive
C. Negative
D. None of these
2 Area under the force displacement graph gives
A. Power
B. Work
C. Heat
D. Energy
3 A solar cell is made from:
A. Iron
B. Silicon
C. Germanium
D. Copper
4 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
5 Work done is maximum when angle between force and displacement is
A. 0°
B. 90°
C. 180°
D. None of these
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 Maximum work is done when force and displacement are
A. Parallel
B. Antiparallel
C. Perpendicular
D. Both a and b
8 The unit of work in CGS system is
A. Joule
B. Erg
C. Dyne
D. Watt
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 Which of the following is not a unit of power:
A. J-sec
B. Watt
C. N m/sec
D. Horsepower

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