Ordinary light incident on a glass slab at the polarizing angle suffers a deviation of `22^(@)`. The value of angle of refraction is .......

Options

A. `74^(@)`
B. `22^(@)`
C. `90^(@)`
D. `34^(@)`

Answer

D

Explanation

From figure `theta_(p)=r+22^(@) " "..(1)`
Now from proof of Brewster.s law.
`theta_(p)+90^(@)+r=180^(@)`
`:.` From result (1)
`r+22^(@)=r=90^(@)`
`:.2r=68^(@)`
`:.r=34^(@)`