Question # 1

If no external force acting on a body then such system is called.

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Ideal system

Controlled system

Isolated system

None

What is unit of momentum?

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Kg m/s

m

c

Nil

The ratio of stress to strain is constant,This is known as

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Hook's law

Tensile strain

young's modulus

strain

Plasma is a gas which consists of:

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Negative ions

Positive ions

Neutral ions

All of htese

The unit of torque is:

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N

Nm

m

m/n

Plasma exist in _______________

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Earth

Satellite

Moon

Sun

Breaking system in vehicles depends upon:

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Pascal's law

Hook's law

Archimedes law

Principle of floatation

Land and sea breezes are the result of:

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Absorption

Radiation

Conduction

Convection

Wood, cork,cotton, wool , rubber are the examples of:

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Conductor

Thermal conductor

Insulator

Both a & b

If the applied force is 'F' and its moment arm is 'r' then torque is defined as

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τ = rF

τ = r2F

τ = r + F

τ = 2rF

Which types of friction of maximum

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Sliding

Rolling

Both a and b

None

If the velocity of moving body in circle is doubled, then its centripetal force is

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Double

Half

Four times

Remain

False ceiling is done to

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Lower the height of ceiling

Keep the roof clean

Cool the room

Insulate the ceiling

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9th Class Physics English Medium KPK Boards Online Mcqs MCQs With Answers

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