Question # 1

P.E is calculated by a formula :

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Mgh

mg

gh

Nil

Falls ceiling is done to:

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Lower the height of ceiling

Keep the roof clean

Cool the room

Insulate the ceiling

In thermo flask radiation is stopped by using :

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Green color

Transparent

Silver color

Nil

Complete equation fy/fx =

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Sin𝜽

Cos 𝜽

Tan𝜽

Cos ec𝜽

Newton related inertia of the body with its

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Weight

Mass

Density

Force

Which of the following material has large specific heat?

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Copper

Ice

Water

Mercury

The mathematical formula of thermal conductivity is

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k =Q/t x L/A (T1 - T2)

k =Q/t x L/A (T1 + T2)

k =t/Q x L/A (T1 - T2)

k =2Q/t x L/A (T1 + T2)

The quantities that are completely decribed by only magnitude are.

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vector

Scalar

Base

Derived

The changing of a liquid into vapours from the surface of the liquid

without heating:

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Cooling

Vaporization

Evaporation

Sublimation

All bodies absorb or emit energy by

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convection

radiation

conduction

both (a) & (c)

The value of gravitational constant "G" is Nm² kg^-2

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6.67 x 10^-21

6.67 x 10^-11

6.67 x 10^-23

6.67 x 10¹¹

A body is said to be in __________ equilibrium if after a slight tilt return to its previous position:

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Stable

Unstable

Neutral

None

Which surface is bad emitter:

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White surface

Black surface

Coloured surface

Silver surface

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