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

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 # 2

The commercial unit of electrical energy is :

Question # 3

The amount of coal used since 1945 up till now as compared to that used in the whole of history before that is

Question # 4

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

Question # 5

A body moves a distance of 10 m among a straight line under the action of a force of 5 N. If the work done is 25 J, the angle which the force makes with the direction of motion of a body is:

Question # 6

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

Question # 7

The energy stored int he water of the dam is:

Question # 8

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 # 9

Work done is maximum when angle between force and displacement is

Question # 10

Work done in lower and bucket into the well is:

Question # 11

A 100 Kg car is moving at the speed of 10 m/sec and comes to rest after covering a distance of 50 m. The amount of work done against the friction is:

Question # 12

Work has a dimension as that of:

Question # 13

Watt x second is unit of:

Question # 14

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

Question # 15

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:

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ECAT Physics Chapter 4 Important MCQ's

Sr.# Question Answer
1 A body moves a distance of 10 m along a straight line under the action of a force of 5 N. If the work done is 25 J, the angle which force makes with the direction of motion of a body is:
A. 0°
B. 30°
C. 60°
D. 90°
2 The unit of work in CGS system is
A. Joule
B. Erg
C. Dyne
D. Watt
3 The work done in 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
4 Tick the conservation force:
A. Tension in a string
B. Air resistance force
C. Elastic spring
D. Frictional force
5 Work done in lower and bucket into the well is:
A. Zero
B. Positive
C. Negative
D. None of these
6 When force and displacement are perpendicular to each other than work is equal to
A. Unity
B. Infinity
C. Zero
D. -Fd
7 Work done along a closed path in a gravitational field is:
A. Maximum
B. Minimum
C. Zero
D. Unity
8 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
9 Work has the dimensions 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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