Physics-Interference

NEET Physics Interference Assertion Reason Question

Type: Assertion Reason-assertion-Medium-Class 12

Assertion (A): For two coherent sources, when the path difference is (n+12)λ(n+\frac{1}{2})\lambda, the resultant intensity at a point is zero. | Reason (R): The displacement waves from the sources are out of phase, leading to destructive interference.

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

When the path difference is (n+12)λ(n+\frac{1}{2})\lambda, the waves are out of phase, leading to destructive interference and zero intensity as explained in the NCERT context.

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