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

Question # 2

Which force is not a conservative force?

Question # 3

Work has the dimension as that of:

Question # 4

Which of the following is not a unit of power:

Question # 5

Power is a :

Question # 6

Area under the force displacement graph gives

Question # 7

The unit of work in CGS system is

Question # 8

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

Question # 9

Work done by the force of friction is always

Question # 10

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 # 11

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

Question # 12

The tidal energy is due to gravitational pull of :

Question # 13

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

Question # 14

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

Question # 15

The work performed on an object does not depend on

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ECAT Physics Chapter 4 Important MCQ's

Sr.# Question Answer
1 The unit of work in CGS system is
A. Joule
B. Erg
C. Dyne
D. Watt
2 The dimensions of work
A. [MLT-1]
B. [MLT-2]
C. [ML2T-2]
D. [MLT]
3 SI Unit of work is
A. Nm-1
B. Joule
C. Nms
D. Both a and b
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 body moves a distance of 10 m along a straight line under the action of a force of 5 N and work done in 25J. The angle which the force makes with the direction of motion will be
A. 60°
B. 90°
C. 30°
D. 0°
6 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°
7 The work performed on an object does not depend on:
A. Force applied
B. Angle at which force is inclined to the displacement
C. Initial velocity of the object
D. Displacement
8 Work done is maximum when angle between force and displacement is:
A. 0°
B. 90°
C. 180°
D. None of these
9 Work done in lower and bucket into the well is:
A. Zero
B. Positive
C. Negative
D. None of these
10 When a body moves against the force of friction on a horizontal plane, the work done by the body is:
A. Positive
B. Negative
C. Zero
D. None of these

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