Q. The condition for constructive interference is

रचनात्मक हस्तक्षेप की शर्त है

A
Phase difference = π
चरण अंतर = π
B
Path difference = λ/2
पथ अंतर = λ/2
C
Path difference = λ
पथ अंतर = λ
D
Phase difference = 3π/2
चरण अंतर = 3π/2

Explanation

For constructive interference to occur, the path difference between two waves should be an integral multiple of wavelength (nλ). The simplest case is:

Path difference=λ\text{Path difference} = \lambda

This leads to constructive superposition, giving a bright fringe.

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