Question # 1

The ability of body to do work is called:

Choose an answer

Power

Energy

Work

Efficiency

Which quantity is scalar?

Choose an answer

Force

Power

Velocity

Torque

If the direction of motion of the force is perpendicular to the direction of motion of the body then work done will be:

Choose an answer

Maximum

Minimum

Zero

None of these

Mathematically, % efficiency is defined as & nbsp

Choose an answer

Efficiency % required form or input/ total input energy x 100

Efficiency % input energy / output energy x 100

Efficiency % work / time x 100

Which one of the following converts light energy into electrical energy?

Choose an answer

Electric Bulb

Electric generator

Photocell

Electric cell

The kinetic energy of a body of mass 2 kg is 25J, its speed is

Choose an answer

5 ms-1

12.5 ms-1

25 ms-1

50 ms-1

Which one of the following converts light energy into electrical energy:

Choose an answer

Electric Bulb

Electric Generator

Photocell

Electric generator

In falling object potential energy is covered to:

Choose an answer

K.E

Force

P.E

Nil

P.E is equal to:

Choose an answer

mgh

1/2 mv²

W x F

None of these

The speed of light is equal to:

Choose an answer

3 x 10⁵ ms^-1

3 x 10⁸ms^-1

3 x 10⁹ms^-1

3 x 10²ms^-1

Kinetic and potential energy are the kinds of energy:

Choose an answer

Chemical

Nuclear

Light

Mechanical

If 1N is force and body is displaced to 1m than work is :

Choose an answer

2 J

1 J

3 J

4 J

1 mega watt is equal to:

Choose an answer

10² W

10³ W

10⁵ W

10⁶W

More Classes

Other Links

9th Class Physics Chapter 6 Work and Energy English Medium KPK Boards Online Mcqs MCQs With Answers

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer