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

Tick the conservation force:

Question # 2

The work performed on an object does not depend on:

Question # 3

When a force of 0.5 N displaces a body through a distance of 2m in the direction of force, the work done is

Question # 4

Work is always done on a body when:

Question # 5

Work is a:

Question # 6

Work is always done on a body when:

Question # 7

The ultimate source of money sources of energy is:

Question # 8

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

Question # 9

Work done in lower and bucket into the well is:

Question # 10

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

Question # 11

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

Question # 12

The space around the earth within which it expects a force of attraction on other bodies is known as:

Question # 13

The power of an electric generating station is expressed in:

Question # 14

Work has the dimension as that of:

Question # 15

The unit of work in CGS system is

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ECAT Physics Chapter 4 Important MCQ's

Sr.# Question Answer
1 Work is a
A. Scalar quantity
B. Vector quantity
C. Base quantity
D. None of these
2 1 J = ________?
A. 107erges
B. 10-7erges
C. 105erges
D. 10-5erges
3 If we draw a graph between d (along x-axis) and F (along y-axis) and get a straight line horizontal to x-axis, then area under this straight line represents:
A. Power
B. Work
C. Pressure
D. None of these
4 A two Kg block is held 1 m above the floor for 50 seconds, the work done is:
A. Zero
B. 10.2 J
C. 100 J
D. 980 J
5 The space around the earth within which it expects a force of attraction on other bodies is known as:
A. Nuclear field
B. Conservative field
C. Electric field
D. Gravitational field
6 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
7 Work done along a closed path in a gravitational field is:
A. Maximum
B. Minimum
C. Zero
D. Unity
8 Work done by the force of friction is always
A. Positive
B. Zero
C. Negative
D. Maximum
9 The value of escape velocity of Earth planet comes out to be:
A. 11 m/sec
B. 11 km/sec
C. 11 km/hour
D. 11 cm/sec
10 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

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