Question # 1

A couple is formed by

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Two forces perpendicular to each other

Two like parallel forces

Two equal and opposite forces in the same line

Two equal and opposite forces not in the same line

Moon is ____ satellite.

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Natural

Communications

Artificial

Geostationary

Momentum is defined as the product of

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Mass and acceleration

Force and acceleration

Mass and velocity

Force and velocity

If Fx and Fy are rectangular components of vector F, then its direction is determined by the relation

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θ = sin-1 Fv/Fx

θ = tan-1 Fx/Fy

θ = tan Fx/Fy

θ = tan Fy/Fx

In Fahrenheit scale, upper refrence point is:

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32 ^oF

212 ^oF

180 ^oF

100 ^oF

The weight of body on earth with mass 8 kg is:

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10 N

100 N

80 N

8 N

Ships and submarines float partially or completely according to:

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Newton's law

Pascal's law

Principle of floatation

None

The SI unit of thermal conductivity is

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Wm K-1

Wm-1K

Wm-1K -1

WmK

In atoms and molecules are packed closely together:

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Solids

Gas

Liquid

Plasma

The earth temperature is :

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300 K

200 k

100 K

50 K

A silvery white surface is a :

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Worst reflector

Best reflector

Worst absorber

Best absorber

The deforming force is called _______________

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Stress

Strain

Young's Modulus

Nil

Heat is an important form of

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Matter

Energy

Wind

Force

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

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