Optics Question 1150

Question: In Young double slit experiment, when two light waves form third minimum, they have

[RPMT 2003]

Options:

A) Phase difference of 3π

B) Phase difference of 5π2

C) Path difference of 3λ

D) Path difference of 5λ2

Show Answer

Answer:

Correct Answer: D

Solution:

For minima, path difference Δ=(2n1)λ2

For third minima n=3Δ=(2×31)λ2=5λ2



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