NEET Physics Question - Waves - Principle of Superposition, Interference and Beats

Assertion (A): Interference is position dependent phenomenon.

Reason (R): Beats is time dependent phenomenon.

(1) Both (A) & (R) are true and the (R) is the correct explanation of the (A)

(2) Both (A) & (R) are true but the (R) is not the correct explanation of the (A)

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

(4) Both (A) and (R) are false

Solution:

Interference describes the variation of intensity with position due to superposition of waves, so (A) is true. Beats describe the periodic variation in intensity with time at a point due to superposition of two waves with slightly different frequencies, so (R) is true. (R) does not explain (A).

Rankers Physics

Interference and Beats Phenomena

Solution:

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