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

Escape velocity from surface of Moon as compared to that from Earth surface is:

Question # 2

Work done in lower and bucket into the well is:

Question # 3

The work performed on an object does not depend on

Question # 4

When a falling body hits ground, its KE changes to _____ energy.

Question # 5

A solar cell is made from:

Question # 6

Work has a dimension as that of:

Question # 7

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

Question # 8

Which of the following types of force can do no work on the particle on which it acts

Question # 9

SI Unit of work is

Question # 10

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

Question # 11

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

Question # 12

A 100 Kg car is moving at the speed of 10 m/sec and comes to rest after covering a distance of 50 m. The amount of work done against the friction is:

Question # 13

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

Question # 14

The work done in moving a body between two points in a conservative field is independent of the

Question # 15

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

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ECAT Physics Chapter 4 Important MCQ's

Sr.# Question Answer
1 When a force of 0.5 N displaces a body through a distance of 2m in the direction of force, the work done is
A. 0.5 J
B. 2 J
C. 0.25 J
D. 1 J
2 The tidal energy is due to gravitational pull of :
A. sun
B. moon
C. Mars
D. None of these
3 Escape velocity from surface of Moon as compared to that from Earth surface is:
A. Greater
B. Smaller
C. Equal
D. None of thes
4 Teh consumption of energy by a 1000 watt heater in half an hour is:
A. 5 Kwh
B. 0.5 Kwh
C. 2.5 Kwh
D. 3.2 Kwh
5 Which force is not a conservative force?
A. Frictional force
B. Gravitational force
C. Electric force
D. Elastic spring force
6 The dimensions of work
A. [MLT-1]
B. [MLT-2]
C. [ML2T-2]
D. [MLT]
7 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
8 Work done on a body by gravity in lifting it up to certain height is
A. Maximum
B. Minimum
C. Zero
D. Negative
9 The ultimate source of money sources of energy is:
A. Sun
B. Air
C. Water
D. Petroleum
10 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

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