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PHYSICS

Physics
Heat from the sun reaches earth by the process of

Conduction
Radiation
Convection
All of these

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Physics
Ocean currents are an example of

Conduction
Insulation
Radiation
Convection

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Physics
What type of heat transfer is boiling water?

Convection
None of these
Radiation
Conduction

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Physics
Ventilators are provided near the ceiling of the room because

The exhaled warmer air rises up and goes out
These provide some sunlight in the room
These do not look nice in the lower part
These provide cross ventilation in the room

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Physics
Wollen clothes keep the body warm because

Wool is a bad conductor
Wool rejects heat from the outer objects
Wool increases the temperature of the body
Wool absorbs radiant heat from outer objects

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