Optics Question 1085

Question: In Young’s double slit experiment, the phase difference between the light waves reaching third bright fringe from the central fringe will be (l =6000 Å )

[MP PMT 1994]

Options:

A) Zero

B) $ 2\pi $

C) $ 4\pi $

D) $ 6\pi $

Show Answer

Answer:

Correct Answer: D

Solution:

$ \because n=3,\ $

$\therefore 2n\pi =2\times 3\pi =6\pi $



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