Find the thickness fo a plate which will produce a change in optical path equal to half th ewavelength - of the light passing through it normally- The refractiveindex of the plate is -

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Standard XII

Physics

Refractive Index

Find the thic...

Question

Find the thickness fo a plate which will produce a change in optical path equal to half th ewavelength $λ$ of the light passing through it normally. The refractive
index of the plate is $μ$

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Solution

Let, t = thickness of the plate,
Given, Opital path difference
$= (μ - 1) t = \frac{λ}{2} \Rightarrow t = \frac{λ}{2 (λ - 1)}$

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Find the thickness fo a plate which will produce a change in optical path equal to half th ewavelength λ of the light passing through it normally. The refractive index of the plate is μ

Let, t = thickness of the plate, Given, Opital path difference =(μ−1)t=λ2⇒t=λ2(λ−1)

Find the thickness fo a plate which will produce a change in optical path equal to half th ewavelength $λ$ of the light passing through it normally. The refractive
index of the plate is $μ$

Let, t = thickness of the plate,
Given, Opital path difference
$= (μ - 1) t = \frac{λ}{2} \Rightarrow t = \frac{λ}{2 (λ - 1)}$