In Young?s double-slit experiment the fringe width is b. If entire arr – McqOptions

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1.	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]
A.	\[\frac{\beta }{n+1}\]
B.	nb
C.	\[\frac{\beta }{n}\]
D.	\[\frac{\beta }{n-1}\]
Answer» D. \[\frac{\beta }{n-1}\]

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