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

When a wall is pushed by a person very strongly, he has done:

Question # 2

SI Unit of work is

Question # 3

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

Question # 4

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 # 5

The work done moving a body between two points in a conservation field is independent of the:

Question # 6

The commercial unit of electrical energy is :

Question # 7

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

Question # 8

When velocity of moving body is doubled, the quantity which is also doubled is its:

Question # 9

Power is a :

Question # 10

Work is always done on a body when:

Question # 11

Teh consumption of energy by a 1000 watt heater in half an hour is:

Question # 12

Work has the dimensions as that of

Question # 13

A solar cell converts energy of the Sun into:

Question # 14

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

Question # 15

Work is a:

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ECAT Physics Chapter 4 Important MCQ's

Sr.# Question Answer
1 When a wall is pushed by a person very strongly, he has done:
A. Maximum work
B. Zero work
C. Positive work
D. Negative work
2 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
3 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
4 A 2 kg block is held 1 m above floor for 50 seconds. The work done is:
A. Zero
B. 10.2 J
C. 100 J
D. 980 J
5 The work done in moving a body between two points in a conservation field is independent of the:
A. Direction
B. Force applied
C. Path followed by the body
D. Power
6 A body moves a distance of 10 m along a straight line under the action of a force of 5 N and work done is 25J. The angle which the force makes the direction of motion will be:
A. 60°
B. 90°
C. 30°
D. 0°
7 Work has the dimension as that of:
A. Torque
B. Angular momentum
C. Linear momentum
D. Power
8 The types of mechanical energy is/are:
A. Kinetic energy
B. Potential energy
C. Both of these
D. None of these
9 SI Unit of work is
A. Nm-1
B. Joule
C. Nms
D. Both a and b
10 When two protons are brought are brought closer potential energy of both of them:
A. Increases
B. Decreases
C. Remains same
D. None of these

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