Young's double-slit experiment is made in a liquid. The 10th bright fringe in liquid lies where 6th dark fringe lies in vacuum. The refractive index of the liquid is approximately
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a
1.8
b
1.54
c
1.67
d
1.2
answer is A.
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Detailed Solution
In liquid wavelength reduces by a factor equal to refractive index of liquidPath difference is equal for bright and dark condition10×λμ=(2×6-1)λ2⇒μ=1.81