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

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

Question # 2

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

Question # 3

Which of the following types of force can do no work on the particle on which it acts

Question # 4

Work done in lower and bucket into the well is:

Question # 5

The power of an electric generating station is expressed in:

Question # 6

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 # 7

SI Unit of work is

Question # 8

Which force is not a conservative force:

Question # 9

Power is a :

Question # 10

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

Question # 11

Watt x second is unit of:

Question # 12

Maximum work is done when force and displacement are

Question # 13

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

Question # 14

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 # 15

A two Kg block is held 1 m above the floor for 50 seconds, the work done is:

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ECAT Physics Chapter 4 Important MCQ's

Sr.# Question Answer
1 The commercial unit of electrical energy is :
A. K Watt
B. KWH
C. Horse power
D. Joule
2 The work done in moving a body between two points in a conservative field is independent of the
A. Direction
B. Force applied
C. Path followed by the body
D. Power
3 Which force is not a conservative force:
A. Frictional force
B. Gravitational force
C. Electric force
D. Elastic spring force
4 Which of the following is not a unit of power:
A. J-sec
B. Watt
C. N m/sec
D. Horsepower
5 The angle between centripetal force and displacement of the body moving in a circle is:
A. 0°
B. 90°
C. 180°
D. None of these
6 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
7 A boy pulls a toy car through a distance of 5 m by applying a force of 0.5 N, which makes and angle of 60° with the horizontal. The work done by the boy is:
A. 1.25 J
B. 12.5 J
C. 125 J
D. None of these
8 When a falling body hits ground, its KE changes to _____ energy.
A. Potential
B. Chemical
C. Mechanical
D. sound and heat
9 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
10 The ultimate source of money sources of energy is:
A. Sun
B. Air
C. Water
D. Petroleum

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