Gravitational force is required for (a) stirring of liquid (b) convection (c) conduction (d) radiation.

Answer: (b). Convection needs buoyancy: hot, less dense fluid rises and cold, denser fluid sinks under gravity. Conduction and radiation work without gravity; stirring is done mechanically. So the answer is (b) convection.

Gravitational force is required for | NEET 2000 (AIPMT)

Q37NEET 2000 · AIPMTEasy

Satellite Energy & Weightlessness

Gravitational force is required for

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Answer: (b)

Convection needs buoyancy: hot, less dense fluid rises and cold, denser fluid sinks under gravity.
Conduction and radiation work without gravity; stirring is done mechanically.
So the answer is (b) convection.

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