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

If one newton force acts on a body and displaces the body through 1m work done on body is

Question # 2

Work has the dimension as that of:

Question # 3

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

Question # 4

Area under the force displacement graph gives

Question # 5

A field in which the work done is moving a body along closed path is zero is called:

Question # 6

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 # 7

The consumption of energy by a 60 W bulb in 2 minutes is:

Question # 8

Work done is maximum when angle between force and displacement is

Question # 9

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

Question # 10

The tidal energy is produced due to rotation of Earth relative to:

Question # 11

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

Question # 12

Work done is independent of path followed in _______

Question # 13

The energy stored int he water of the dam 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

The dimensions of work

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ECAT Physics Chapter 4 Important MCQ's

Sr.# Question Answer
1 Work is a 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 are correct
2 The work done by a force keeping an object in circular motion with constant speed is:
A. Zero J.
B. 0.1 J
C. 1 J
D. 0.01 J
3 A 100 kg car is moving at a speed of 10 m/sec and comes to rest after covering a distance of 50 m. the amount of work done against friction is:
A. +5 x 101J
B. +5 x 102J
C. +5 x 103J
D. +5 x 104J
4 The Space around the Earth within which it exerts a force of attraction on other bodies is known as
A. Nuclear field
B. Conservative field
C. Electric field
D. Gravitational field
5 The power of an electric generating station is expressed in:
A. Kilo Jule
B. Kilowatt-hour
C. Kilo watt
D. Watt
6 Work is product of:
A. Force and velocity
B. Heat and energy
C. Force and displacement
D. None of these
7 Tick the conservative force
A. Tension in a string
B. Air resistance
C. Elastic spring
D. Frictional force
8 Work done in lower and bucket into the well is:
A. Zero
B. Positive
C. Negative
D. None of these
9 Work has a dimension as that of:
A. Torque
B. Angular momentum
C. Linear momentum
D. Power
10 The energy stored int he water of the dam is:
A. Electric energy
B. Kinetic energy
C. Potential energy
D. None of these

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