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Physics

Physics
Instrument used to study the behaviour of a vibrating string is :

Sonometer
Hydrometer
Barometer
Hygrometer

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Physics
Outside of cooking utensils are generally left black from below because

Black surface is a good conductor of heat.
Black surface is a good absorber of heat.
Black surface is a poor conductor of heat.
It is difficult to clean daily.

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Physics
Heat flows as a result of difference of ________

Mass
Temperature
Density
Volume

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Physics
Which of the following causes adiabatic temperature changes in atmosphere?

Latent heat of condensation
Partial absorption of solar radiation by the atmosphere
Deflection and advection
Expansion and compression of the air

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Physics
A metal plate with a circular hole at the centre is heated. What will happen to the area of the hole ?

Will increase first and then dcrease
Increase
Dacrease
Remain constant

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Physics
Air pressure is usually highest when the air is

Cool and moist
Cool and dry
Warm and moist
Warm and dry

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