A beam of light travelling in water falls on a glass plate immersed in water. When the incidence angle is `51^(@)`, then the reflected beam of light is found polarized. Calculate `mu` of glass. Given `mu` of water is `4//3`.

Answer

`1.647`

Explanation

`tan i_(p) = ._(g)mu^(w) = (mu " of glass")/(mu " of water")`
`:. mu " of glass" = mu " of water" xx tan i_(p)`
`= (4)/(3) xx tan 51^(@) = (4)/(3) xx 1.2349 = 1.647`