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 field in which the work done is moving a body along closed path is zero is called:

Question # 2

Work is always done on a body when:

Question # 3

The value of escape velocity of Earth planet comes out to be:

Question # 4

Work is a always done on a body when

Question # 5

A solar cell is made from:

Question # 6

The types of mechanical energy is/are:

Question # 7

The field in which work done in moving a body between two points depends upon the path followed is called:

Question # 8

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 # 9

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

Question # 10

Which force is not a conservative force:

Question # 11

Work is a Quantity

Question # 12

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

Question # 13

Work done along a closed path in a gravitational field is:

Question # 14

When two protons are brought are brought closer potential energy of both of them:

Question # 15

Work is a scalar product of

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ECAT Physics Chapter 4 Important MCQ's

Sr.# Question Answer
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:
A. Minimum Work
B. Maximum Work
C. Zero Work
D. Negative Work
2 Which of the following types of force can do no work on the particle on which it acts
A. Frictional force
B. Gravitational force
C. Electric force
D. Centripetal force
3 Which force is not a conservative force:
A. Frictional force
B. Gravitational force
C. Electric force
D. Elastic spring force
4 The ultimate source of money sources of energy is:
A. Sun
B. Air
C. Water
D. Petroleum
5 The commercial unit of electrical energy is :
A. K Watt
B. KWH
C. Horse power
D. Joule
6 Work has the dimension as that of:
A. Torque
B. Angular momentum
C. Linear momentum
D. Power
7 The unit of work in CGS system is
A. Joule
B. Erg
C. Dyne
D. Watt
8 In the force applied is parallel to the direction of motion, then work done is:
A. Maximum
B. Minimum
C. Zero
D. None of these
9 Which of the following type of force can do no work on the particle on which it acts:
A. Frictional force
B. Gravitational force
C. Electric force
D. Centripetal force
10 A solar cell converts energy of the Sun into:
A. Heat energy
B. Magnetic energy
C. Light energy
D. Sound energy

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