A ray of lighyt is incident at an angle ...

A ray of lighyt is incident at an angle I on a glass slab of refractive index `mu`. The angle between reflected and refracted light is `90^@` Then the relationship between I and `mu` is

A

`i= tan^(-1)(1/mu)`

B

`tan I = mu`

C

`sin I = mu`

D

`cos I = mu`

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The correct Answer is:

B

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