Ray of light is incident on surface of glass plate of absolute refractive index 1.55 at an angle of polarisation angle of refraction = ......

Options

A. `75^(@)11'`
B. `32^(@)49'`
C. `147^(@)49'`
D. `0^(@)`

Answer

B

Explanation

`n=tantheta_(p)`
`1.55=tan theta_(p)`
`:.theta_(p)=tan^(-1)(1.55)`
`:. Theta_(p)=57^(@)10.`
From Figure,
`theta_(p)+90^(@)+r=180^(@)`
`:.theta_(p)+r=90^(@)`
`:.r=90-theta_(p)`
`:.r=89^(@)60.-57^(@)10.`
`:. r=32^(@)50.`