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PHYSICS

Physics
Heat from the sun reaches earth by the process of

Conduction
Radiation
All of these
Convection

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Physics
Ocean currents are an example of

Radiation
Convection
Conduction
Insulation

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Physics
What type of heat transfer is boiling water?

Conduction
None of these
Convection
Radiation

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

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