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 power of an electric generating station is expressed in:

Question # 2

The dimensions of work

Question # 3

Work done in lower and bucket into the well is:

Question # 4

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

Question # 5

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

Question # 6

Work is a:

Question # 7

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

Question # 8

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

Question # 9

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

Question # 10

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

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

Work is a

Question # 13

The types of mechanical energy is/are:

Question # 14

The energy stored int he water of the dam is:

Question # 15

The work done on the body will be zero if:

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ECAT Physics Chapter 4 Important MCQ's

Sr.# Question Answer
1 The energy stored int he water of the dam is:
A. Electric energy
B. Kinetic energy
C. Potential energy
D. None of these
2 Tick the conservation force:
A. Tension in a string
B. Air resistance force
C. Elastic spring
D. Frictional force
3 Which force is not a conservative force?
A. Frictional force
B. Gravitational force
C. Electric force
D. Elastic spring force
4 The work done on the body will be zero if:
A. No force is applied on the body
B. Force is applied but no displacement
C. Angle between F(force) and d(displacement) is 90°
D. All of these are correct
5 Work is a Quantity
A. Vector
B. Scalar
C. Non-physical
D. None of these
6 Work is always done on a body when:
A. A force acts on it
B. It moves through certain distance
C. None of A or B is correct
D. Both A and B is correct
7 The dimensions of work
A. [MLT-1]
B. [MLT-2]
C. [ML2T-2]
D. [MLT]
8 When force and displacement are perpendicular to each other than work is equal to
A. Unity
B. Infinity
C. Zero
D. -Fd
9 When a falling body hits ground, its KE changes to _____ energy.
A. Potential
B. Chemical
C. Mechanical
D. sound and heat
10 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

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