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← Heat and Thermodynamics
GK QUESTION#2936

Assertion (A): Heat from the Sun reaches the Earth even though space is a vacuum. Reason (R): Radiation does not require a medium for the transfer of heat.

  1. ABoth A and R are true, and R is the correct explanation of A.Correct answer
  2. BBoth A and R are true, but R is not the correct explanation of A.
  3. CA is true, but R is false.
  4. DA is false, but R is true.
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Answer

A. Both A and R are true, and R is the correct explanation of A.

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Explanation

Both the assertion and reason are true, and the reason explains the assertion. Electromagnetic radiation can carry solar energy through a vacuum. Conduction and convection require matter.

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