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Physics

Physics
Coolis tube is used to produce

Radio waves
Micro waves
X-rays
Gama rays

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Physics
When the milk is churned vigorously the cream from it is separated out due to

Frictional force
Centripetal force
Centrifugal force
Gravitational force

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Physics
According to the quantum theory of light, the energy of light is carried in discrete units are called

Photoelectrons
Photons
Electrons
Protons

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Physics
Why does ice covered in sawdust not melt quickly ?

Sawdust is a bad conductor of heat
Sawdust is good conductor of heat
Sawdust does not allow the air to touch the ice
The water is absorbed by sawdust

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Physics
At what temperature (in Fahrenheit) pure water freezes?

48
37
32

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Physics
A bimetal made copper and iron strips welded together is straight at room temperature. It is held vertically with iron strip towards left and copper strip towards right. If this bimetal is heated, it will

Bend towards right
Remain straight
None of these
Bend towards left

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