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

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

Question # 2

Tick the conservative force

Question # 3

The types of mechanical energy is/are:

Question # 4

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

Question # 5

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

Question # 6

Work is always done on a body when:

Question # 7

A 2 kg block is held 1 m above floor for 50 seconds. The work done is:

Question # 8

Which of the following is not a unit of power:

Question # 9

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

Question # 10

In the force applied to parallel to the direction of motion, then the work done is:

Question # 11

The angle between centripetal force and displacement of the body moving in a circle is:

Question # 12

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

Question # 13

Work is a scalar product of

Question # 14

Work is a

Question # 15

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:

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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 Work is a:
A. Scalar quantity
B. Vector quantity
C. Base quantity
D. None of these
3 The consumption of energy by a 60 W bulb in 2 minutes is:
A. 2 watt-hour
B. 120 watt-hour
C. 30 watt-hour
D. None of these
4 When the body is moves against the force of friction on a horizontal plane, the work done by the body is:
A. Positive
B. Negative
C. Zero
D. None of these
5 Which one is conservative force
A. Electric force
B. Frictional force
C. Normal force
D. Air resistance
6 1 J = ________?
A. 107erges
B. 10-7erges
C. 105erges
D. 10-5erges
7 The work done 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
8 The power of an electric generating station is expressed in:
A. Kilo Jule
B. Kilowatt-hour
C. Kilo watt
D. Watt
9 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
10 The dimensions of work
A. [MLT-1]
B. [MLT-2]
C. [ML2T-2]
D. [MLT]

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