At which angle of incidence light reflected fron glass becomes completely plane polarised i At this angle of incidence angle of refraction is `33.6^(@)`

Options

A. `90^(@)`
B. `0^(@)`
C. `56.4^(@)`
D. `46.4^(@)`

Answer

C

Explanation

`theta_(p)=90^(@)-r`
`=90^(@)-33.6^(@)`
`=56.4^(@)`