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

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

Question # 2

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

Question # 3

Work done on a body by gravity in lifting it up to certain height is

Question # 4

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

Question # 5

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 # 6

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

Question # 7

The tidal energy is due to gravitational pull of :

Question # 8

The Space around the Earth within which it exerts a force of attraction on other bodies is known as

Question # 9

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

Question # 10

The work done on the body will be zero if:

Question # 11

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

Question # 12

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

Question # 13

Work done is maximum when angle between force and displacement is

Question # 14

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

Question # 15

A labourer carrying a distance a load on his head moves from rest on a horizontal road to another point where he comes to rest. He has done:`

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ECAT Physics Chapter 4 Important MCQ's

Sr.# Question Answer
1 Work done is independent of path followed in _______
A. Gravitational field
B. Magnetic field
C. Electric field
D. All of these
2 Work done by the force of friction is always
A. Positive
B. Zero
C. Negative
D. Maximum
3 Which of the following is not a unit of power:
A. J-sec
B. Watt
C. N m/sec
D. Horsepower
4 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. 2 J
B. 0.25 J
C. 1 J
D. 0.5 J
5 A field in which the work done is moving a body along closed path is zero is called:
A. Nuclear filed
B. Conservative field
C. Gravitational field
D. Non-conservative field
6 Work has a dimension as that of:
A. Torque
B. Angular momentum
C. Linear momentum
D. Power
7 Area under the force displacement graph gives
A. Power
B. Work
C. Heat
D. Energy
8 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
9 Watt x second is unit of:
A. Force
B. Work
C. Power
D. None of these
10 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

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