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Physics

Physics
Lens is made up of which glass

Flint glass
Pyrex glass
Ordinary glass
Cobalt glass

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Physics
Heat is transmitted from higher temperature to lower temperature through the actual motion of the molecules in

Convection
Both conduction and convection
Conduction
Radiation

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Physics
What type of lens is used in a magnifying glass

Concave
Plano-concave
Convex
None of these

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Physics
Energy is continuously created in the sun due to:

Radioactivity
Artificial radioactivity
Nuclear fusion
Nuclear fission

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Physics
In nuclear reactor, heavy water is used as

Atomic smasher
Coolant
Fuel
Moderator

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Physics
A doppler effect occurs when a source of sound moves

None of these
Away from you
Both A & B
Towards you

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