Find the lateral shift of a light ray while it passws through a parallel glass slab of thickness 10 cm places in air. The angle of incidence in air is `60^(@)` and the angle of refraction in glass is `45^(@)`.

Explanation

`d = (t sin (i-r))/(cos r)`
`= (10sin (60^(@) - 45^(@)))/(cos 45^(@))`
`= (10sin 15^(@))/(cos 45^(@))`
`= 10 sqrt(2) sin 15^(@) cm`