Physics-Interference

NEET Physics Interference MCQ Question

Type: MCQ-fact-Medium-Class 12

What condition leads to constructive interference in Young's double slit experiment?

A

Path difference is an integer multiple of the wavelength.

B

Path difference is a half-integer multiple of the wavelength.

C

Path difference is zero.

D

Path difference equals the wavelength divided by two.

Correct Answer

Option A

Detailed Explanation

Constructive interference occurs when the path difference between two coherent sources is equal to nλ, where n is an integer (0, 1, 2, ...). This is derived from the principle of superposition discussed in the context of interference.

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