Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A): Electromagnetic waves carry energy but not momentum. Reason (R): Mass of a photon is zero. In the light of the above statements, choose the most appropriate answer from the options given below:

(A) Both (A) and (R) are true and (R) is the correct explanation of (\mathbf{A})

(B) Both (\mathbf{A}) and (\mathbf{R}) are true but (\mathbf{R}) is not the correct explanation of (\mathbf{A})

(D) (A) is true but (\mathbf{R}) is false

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JEE Mains · Physics · STD 12 - Dual nature of radiation and matter

JEE Mains 2025
Easy
MCQ

Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R).
Assertion (A) : Electromagnetic waves carry energy but not momentum.
Reason (\(\mathbf{R}\)): Mass of a photon is zero.
In the light of the above statements, choose the most appropriate answer from the options given below :

Pick an option to check your answer.

Verified Solution

Answer & Solution

Correct Answer

(C) (A) is false but (R) is true

Step-by-step Solution

Detailed explanation

EM wave carry both energy and momentum. Rest mass of photon is zero.

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