Question # 1

All bodies absorb or emit energy by

Choose an answer

convection

radiation

conduction

both (a) & (c)

Formula of Gravitational potential energy is:

Choose an answer

mgh

mg/h

1/2 mv²

None of these

Heat radiation obey the laws of:

Choose an answer

Absorption

Reflection

Both A and B

None

The braking system of cars, buses etc also works on

Choose an answer

Newton's law

Pascal law

Faraday law

Bohr's law

The force acting on unit area at surface of a body is called:

Choose an answer

Strain

Elasticity

Force

Stress

Land and Sea breezes are the results of:

Choose an answer

Conduction

Convection

Radiation

Conduction and Radiation

Cream separater works on:

Choose an answer

Centrifuge principle

Centripetal force

Both

None

Co-efficient of friction between iron and iron is:

Choose an answer

1.0

0.62

0.9

1.2

The study of motion without reference to mass and force.

Choose an answer

Mechanics

Dynamics

Kinematics

None of these

If a force F makes an angle θ with the direction of motion of the force, then the formula for the work done will be:

Choose an answer

W = FS

W = FS cosθ

W = FS sinθ

W = FS tanθ

in isolated system the momentum after collision of two bodies.

Choose an answer

Increase

Constnat

Decrease

Zero

Which of the following is the unit of momentum?

Choose an answer

Nm

kgms^-2

Ns

Ns^-1

F = Kx is mathematical form of which law:

Choose an answer

Law of gravity

Hooke's Law

Einstein's theory

It is just relation

Water on cooling below 4 ^oC begins to:

Choose an answer

Expand

Contract

Boils

None of these

Which of the following do not effect evaporation?

Choose an answer

Temperature

Wind

Volume

Surface area of liquid

Feathers of bird give good thermal:

Choose an answer

Conduction

Insulation

Convection

None of these

More Classes

Other Links

9th Class Physics 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

Choose an answer

Choose an answer

Choose an answer