Easy MCQ +4 / -1 PYQ · JEE Mains 2025

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 :

  1. A <p>Both <b>(A)</b> and <b>(R)</b> are true and <b>(R)</b> is the correct explanation of <b>(A)</b></p>
  2. B <p>Both <b>(A)</b> and <b>(R)</b> are true but <b>(R)</b> is not the correct explanation of <b>(A)</b></p>
  3. C <p><b>(A)</b> is false but <b>(R)</b> is true</p> Correct answer
  4. D <p><b>(A)</b> is true but <b>(R)</b> is false</p>

Solution

<p>Assertion is false because em waves have momentum. </p>

About this question

Subject: Physics · Chapter: Electromagnetic Waves · Topic: Properties of EM Waves

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