Question # 1

Convection of heat is a process of heat transfer due to;

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Random motion of molecules

Downward motion of molecules

Upward motion of molecules

Free motion of molecules

The force exerted perpendicularly on unit of area of an object is called:& nbsp

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strain

young's modulus

pressure

buoyant force

The Earth attracts a body with a force equal to its:

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Velocity

Gravity

Weight

Mass

S.I unit of gravitational field strength is:

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Nkg

Nkg^-1

Nkg^-2

Nkg^-3

Pressure is quantity:

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Scalar

Vector

Constnat

Dependent

Which of the solid does not possess the fixed shape and volume?

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Stone

Metal spoon

Pencil

Amorphous solid

Glass and transparent polythene sheets allow radiations of wavelength to pass through them:

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Long

Short

Medium

All

Moon is a _____________ satellite.

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Natural

Artificial

Not manmade

Nil

Two bodies of masses m₁ and m₁ attached to the ends of an inextensible string passing over a frictionless pulley such that both move vertically. The acceleration of the bodies is:

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m1 x m₂ / m₁ + m₂ g

m₁ - m₂ / m₁ + m₂ g

m₁ + m₂ / m₁ - m₃ g

None of these

The velocity of geostationary satellites with respect to the Earth is:

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Maximum

Zero

Minimum

100 ms^-1

Thermal conductivities of Lead

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23

30

35

85

The first man who came up with the idea of gravity was?

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Issac Newton

Einstein

Faraday

J,S Joseph

All are conductors except:

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Copper

Wires

Steel

Wood

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

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