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Transverse & Longitudinal Waves

Two coherent ...

Question

Two coherent sources produce a dark fringe when phase difference between the interfering waves is(n integer)

A

2π

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B

n

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C

(2n-1)π

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D

zero

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Solution

The correct option is C
(2n-1)π

Dark fringes will be produced when there are destructive interference. The condition for that is the two waves should have a phase difference of an odd integral multiple of π.

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