Choose the correct option for the following Assertion (A) and Reason (R).

Question

G1 Physics · Accepted Answer

The Assertion is true. Electromagnetic radiation carries momentum, and transfer of this momentum to a surface produces radiation pressure. The Reason is also true in the intended sense: photons have zero rest mass. However, zero rest mass is not the reason radiation pressure exists. Radiation pressure arises because electromagnetic radiation carries momentum. Therefore both A and R are true, but R is not the correct explanation of A. Correct option: B.