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

Question # 2

The commercial unit of electrical energy is :

Question # 3

The ultimate source of money sources of energy is:

Question # 4

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

Question # 5

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

Question # 6

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 # 7

Work done is maximum when angle between force and displacement is

Question # 8

The field in which work done is moving body between two points depends upon the path followed is called:

Question # 9

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

Question # 10

Work is a always done on a body when

Question # 11

Area under the force displacement graph gives

Question # 12

Work is a Quantity

Question # 13

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

Question # 14

A solar cell is made from:

Question # 15

The value of escape velocity of Earth planet comes out to be:

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ECAT Physics Chapter 4 Important MCQ's

Sr.# Question Answer
1 If force and displacement are in opposite direction, the work done is taken as:
A. Positive work
B. Negative work
C. Zero work
D. Infinte work
2 Work is always done on a body when:
A. A force acts on it
B. It moves through certain distance
C. None of A and B is correct
D. Both A and B is correct
3 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
4 A 2 kg block is held 1 m above floor for 50 seconds. The work done is:
A. Zero
B. 10.2 J
C. 100 J
D. 980 J
5 Work has a dimension as that of:
A. Torque
B. Angular momentum
C. Linear momentum
D. Power
6 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
7 A solar cell is made from:
A. Iron
B. Silicon
C. Germanium
D. Copper
8 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
9 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
10 Work has the dimension as that of:
A. Torque
B. Angular momentum
C. Linear momentum
D. Power

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