Optics Question 1137

Question: In Young’s double-slit experiment the fringe width is b. If entire arrangement is placed in a liquid of refractive index n, the fringe width becomes

[KCET 2003]

Options:

A) $ \frac{\beta }{n+1} $

B) nb

C) $ \frac{\beta }{n} $

D) $ \frac{\beta }{n-1} $

Show Answer

Answer:

Correct Answer: C

Solution:

$ \beta =\frac{\lambda D}{d} $ and $ \lambda \propto \frac{1}{\mu } $



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