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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)/(n))`

B

tan i =n

C

i= n

D

cos i= n

Text Solution

Verified by Experts

The correct Answer is:
B
i+ r = `90^(@)`
Snell.s law
1 sin i= n sin r
`rArr sin i= n sin (90^(@) -i)`
`rArr " " tani = n`.
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