A ray incident at a point at an angle of incidence of `60^(@)` enters a glass sphere of refractive index `sqrt(3)` and is reflected and refracted at the farther surface of the sphere. The angle between the reflected and refracted rays at this surface is

Options

A. `50^(@)`
B. `60^(@)`
C. `90^(@)`
D. `40^(@)`

Answer

C

Explanation

(c ) We have refractive index, `mu-sini/sinrrArrsqrt3=sin60^(@)/sinr`

Refracted angle,r=`30^(@)`
The angle between the reflected ray and refracted ray
`theta=180^(@)-i-r=90^(@)`