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The figure shows a ray incident a angle ...

The figure shows a ray incident a angle `i=pi//3` of the plot drawn shown the variartion of `|r-i|`versus`(mu_(1))/(mu_(2))`=k,`(r="angle of refraction")`

the value of `k_(2)` is

A

`1`

B

`2`

C

`1//2`

D

none

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The correct Answer is:
A
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