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NDA 2023 GAT · General Knowledge · Heat and Thermal Physics · medium

The transfer of heat from the Sun to the Earth takes place mainly by

Single correct option

The transfer of heat from the Sun to the Earth takes place mainly by
  1. A. Conduction
  2. B. Convection
  3. C. Radiation
  4. D. Evaporation
Show answer and solution

Answer: (C) Radiation

Space between the Sun and the Earth is nearly empty, so conduction and convection, which need a material medium, cannot operate. Heat travels as electromagnetic radiation, which needs no medium.
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Original question written in the NDA 2023 GAT pattern and checked twice for the correct answer. Not an official question paper. How we write and check questions · Corrections policy · Report a mistake