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

Question # 2

Work is a

Question # 3

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

Question # 4

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

Question # 5

Power is a :

Question # 6

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

Question # 7

Work done is maximum when angle between force and displacement is

Question # 8

Work done in lower and bucket into the well is:

Question # 9

When a wall is pushed by a person very strongly, he has done:

Question # 10

Tick the conservative force

Question # 11

The power of an electric generating station is expressed in:

Question # 12

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

Question # 13

Which one is conservative force

Question # 14

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

Question # 15

Work done is independent of path followed in _______

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ECAT Class Physics Chapter 4 Important MCQ's

Sr.# Question Answer
1 1 J = ________?
A. 107erges
B. 10-7erges
C. 105erges
D. 10-5erges
2 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
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 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
5 Work is a Quantity
A. Vector
B. Scalar
C. Non-physical
D. None of these
6 The ultimate source of money sources of energy is:
A. Sun
B. Air
C. Water
D. Petroleum
7 Work done is maximum when angle between force and displacement is
A. 0°
B. 90°
C. 180°
D. None of these
8 The dimensions of work
A. [MLT-1]
B. [MLT-2]
C. [ML2T-2]
D. [MLT]
9 Work done along a closed path in a gravitational field is:
A. Maximum
B. Minimum
C. Zero
D. Unity
10 The commercial unit of electrical energy is :
A. K Watt
B. KWH
C. Horse power
D. Joule

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