Question # 1

What is the effect of lubricicantion?

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Increase friction

No effect

Reduce friction

None

Latent heat of vaporization is denoted by:

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H1

Hm

Hv

Hf

Waking on earth is the example of

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1st law of motion

Second law of motion

Third law of motion

Law of Momentum

Which of the following is produced in refrigerators by evaporation of a liquefied gas?

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Heating

Cooling

Freezing

Melting

The motion of a body about an axis is called.

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Random motion

Vibratory motion

Rotatory motion

Circular motion

The number of forces that can be added by head to tail rule are

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2

3

4

Any Number

When equal opposite forces are added then the resultant force is ______________

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Double

Triple

Zero

None of these

Formula of Power:

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P = wt

P = w/t

P = t/w

P = w/t²

If there is no change in state of motion, then the body is said be i:

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Rest

Motion

Equilibrium

Rest & motion

Conduction on heat occur at ________ rate in materials

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Different

Same

Both A and B

None

Einstein's mass-energy equation is

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E = mc

E = mc2

E = 2mc

E = m2c

Latent heat of fusion of water is:

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3.36 x 10¹⁰ Jkg^-1

93.6 x 10¹⁰Jkg^-1

3.36 x 10⁵Jkg^-1

None of these

Torque is a ___________ quantity.

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Vector

Scalar

Base

All of these

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

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