Multiple choice

Which of the following heat transfer mechanisms does not require a medium?

  1. Conduction

  2. Convection

  3. Vibration

  4. Radiation
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Radiation heat transfer is concerned with the exchange of thermal radiation energy between two or more bodies. No medium is required for heat transfer by radiation; the radiation can travel through vacuum. For example, the heat is transferred from the sun to the earth by this method.

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