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The Brewster angle for the glass air int...

The Brewster angle for the glass air interface is `54.74^(@)` if a ray of light going from air to glass strikes at an angle of incidence `45^(@)` then the angle of refraction is

A

`60^(@)`

B

`30^(@)`

C

`25^(@)`

D

`54.74^(@)`

Text Solution

Verified by Experts

The correct Answer is:
B
`mu=tani_(p)=tan54.74^(@)=sqrt(2)`
`because sqrt(2)=(sin 45^(@))/(sin r)rArr sin r=1/2rArr r=30^(@)`
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