Question

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^(@)`

Answer 1

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