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Optical Path Length

A glass of th...

Question

A glass of thickness 1 micron is placed in the path of one of the interfering beams in a YDSE experiment. If the wavelength of the source is $6000 ˙ A$ and the central band is found to shift by one band width, find the refractive index of glass.

A

1.1

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B

1.3

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C

1.4

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D

1.6

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Solution

The correct option is D 1.6
$\frac{t (μ - 1) D}{d} = β$ , substituting values, we get, $μ = 1.6$

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