Question

Which of the following methods of flow of heat is (are) based on gravitational attraction?

A

Conduction

B

Convection

C

Radiation

D

All of these

Easy
Solution
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Correct option is B)

Convectional currents that are set up in vessels having considerable height, work on the principle that cooler, denser water tries to move downwards on account of its larger weight while the water closer to the heater i.e. the water at lower height gets heated up and tries to move upwards on account of lower weight.

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