Physics-Interference

NEET Physics Interference Assertion Reason Question

Type: Assertion Reason-assertion-Hard-Class 12

Assertion (A): Constructive interference occurs when the waves from two coherent sources meet in phase at a point. | Reason (R): The intensity at the point of constructive interference is four times the intensity of each individual source.

A

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

B

Both A and R are true but R is not the correct explanation of A.

C

A is true but R is false.

D

A is false but R is true.

Correct Answer

Option A

Detailed Explanation

Both statements are true. Constructive interference happens when waves arrive in phase, and the intensity is four times that of an individual source, as the amplitude doubles, leading to intensity being quadrupled (since intensity is proportional to amplitude squared).

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