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 solar cell converts energy of the Sun into:

Question # 2

SI Unit of work is

Question # 3

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

Question # 4

Work has the dimensions as that of

Question # 5

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

Question # 6

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

Question # 7

Area under the force displacement graph gives

Question # 8

The work done on the body will be zero if:

Question # 9

The types of mechanical energy is/are:

Question # 10

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 # 11

1 J = ________?

Question # 12

Which force is not a conservative force:

Question # 13

A solar cell is made from:

Question # 14

The work done by a force, keeping an object in circular motion with constant speed is:

Question # 15

Work is product of:

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ECAT Physics Chapter 4 Important MCQ's

Sr.# Question Answer
1 Work done in lower and bucket into the well is:
A. Zero
B. Positive
C. Negative
D. None of these
2 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
3 Which one is conservative force
A. Electric force
B. Frictional force
C. Normal force
D. Air resistance
4 A field in which the work done in moving a body along closed path is zero is called
A. Nuclear Field
B. Conservative field
C. Gravitational field
D. Non-conservative field
5 Work is a
A. Scalar quantity
B. Vector quantity
C. Base quantity
D. None of these
6 The unit of work in CGS system is
A. Joule
B. Erg
C. Dyne
D. Watt
7 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.
8 Tick the conservative force
A. Tension in a string
B. Air resistance
C. Elastic spring
D. Frictional force
9 The work done by a force, keeping an object in circular motion with constant speed is:
A. Zero J
B. 1 J
C. 0.1 J
D. 0.01 J
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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