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

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

Question # 2

The dimensions of work

Question # 3

The unit of work in CGS system is

Question # 4

Work is a scalar product of

Question # 5

The space around the earth in which its gravitational force acts on a body is called

Question # 6

A solar cell converts energy of the Sun into:

Question # 7

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 # 8

Work is a always done on a body when

Question # 9

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:`

Question # 10

SI Unit of work is

Question # 11

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

Question # 12

Work is a:

Question # 13

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

Question # 14

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

Question # 15

Work is always done on a body when:

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ECAT Physics Chapter 4 Important MCQ's

Sr.# Question Answer
1 Work done is lowering the bucket into the well is:
A. Zero
B. Positive
C. Negative
D. None of these
2 The unit of work in CGS system is
A. Joule
B. Erg
C. Dyne
D. Watt
3 Work-energy principle states that work done on the body by applied force is equal to change in:
A. Potential energy
B. Kinetic nergy
C. Linear momentum
D. None of these
4 Work is a
A. Scalar quantity
B. Vector quantity
C. Base quantity
D. None of these
5 Work done in lower and bucket into the well is:
A. Zero
B. Positive
C. Negative
D. None of these
6 The work done in moving a body between two points in a conservative field is independent of the
A. Direction
B. Force applied
C. Path followed by the body
D. Power
7 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
8 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
9 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
10 Work done is independent of path followed in _______
A. Gravitational field
B. Magnetic field
C. Electric field
D. All of these

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