Questions  

The YDSE is made in a liquid. The 10th bright fringe in the liquid lies where the 6th dark fringe lies in vacuum. The refractive index of the liquid is approximately.

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By Expert Faculty of Sri Chaitanya
a
1.81
b
1.54
c
1.67
d
1.20
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detailed solution

Correct option is A

∵10β′=112β⇒10λ′Dd=112λDd⇒λλ′=2011=μ∴μ=1.81

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