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

Question # 2

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

Question # 3

Work is always done on a body when:

Question # 4

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

Question # 5

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 with the direction of motion will be:

Question # 6

The tidal energy is due to gravitational pull of :

Question # 7

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 # 8

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

Question # 9

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

Question # 10

Work done is maximum when angle between force and displacement is

Question # 11

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:

Question # 12

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

Question # 13

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

Question # 14

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

Question # 15

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

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ECAT Physics Chapter 4 Important MCQ's

Sr.# Question Answer
1 In the force applied to parallel to the direction of motion, then the work done is:
A. Positive
B. Negative
C. Zero
D. None of these
2 If work is done at the rate of 2 k j per second, then total work done is half an hour will be:
A. 0.5 Kwn
B. 2 Kwh
C. 1 Kwh
D. None of these
3 The dimensions of work
A. [MLT-1]
B. [MLT-2]
C. [ML2T-2]
D. [MLT]
4 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
5 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
6 Work done in lower and bucket into the well is:
A. Zero
B. Positive
C. Negative
D. None of these
7 Work done by the force of friction is always
A. Positive
B. Zero
C. Negative
D. Maximum
8 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
9 The work done by a force keeping an object in circular motion with constant speed is:
A. Zero J.
B. 0.1 J
C. 1 J
D. 0.01 J
10 The space around the earth in which its gravitational force acts on a body is called
A. Electric Field
B. Gravitational field
C. Magnetic field
D. Conservative field

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