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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

Insulation
Convection
Conduction
Radiation

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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

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

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Physics
Wollen clothes keep the body warm because

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

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