Question # 1

What of the following is a god radiator of heat?

Choose an answer

a Shinning silvered surface

a dull black surface

a white black surface

a shinning colored surface

On heating Air becomes.

Choose an answer

Heavier

Lighter

Remain same

None

Heat reflected form the body depends upon :

Choose an answer

Colour and form

Form and speed

Color and speed

None

The device used to stop conduction, convention and radiation:

Choose an answer

Thermometer

Thermo flask

Both

Nil

A Leslie cube is a:

Choose an answer

Metal box

Wooden box

Glass box

None

Leslie's cube is a bod of

Choose an answer

Metal

None Metal

wood

Metalloids

Which of the following is an insulator?

Choose an answer

Wood

Glass

Plastic

Steel

Heat can be transmitted form one object to the other by

Choose an answer

convection

radiation

conduction

all of these

Shining silvered surface is a best:

Choose an answer

Emitter

Absorber

Reflector

None of these

Which one is a good conductor?

Choose an answer

cotton

air

wool

iron

Conduction on heat occur at ________ rate in materials

Choose an answer

Different

Same

Both A and B

None

The brids stretch out their wings and circle in the rising currents of hot air called

Choose an answer

conduction

convection

radiation

thermals

____________ from sun are major source of energy on earth.

Choose an answer

Light

Radiation

Both a & b

None of these

More Classes

Other Links

Physics 9th Class English Medium Unit 9 Online Test 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