Question

For what angle of incidence the lateral shift produced by a parallel sided glass slab is maximum

Answer 1

Lateral shift produced by a parallel side glass slab is maximum when the angle of incidence is 90°

Answer 2

Answer:

90 degrees

Explanation:

Lateral shift = t sec(r) sin(i-r)

For s to be maximum: sin(i-r) should be maximum. Therefore (i-r) should be maximum.

The maximum angle that the light can hit the surface with is 90 degrees. Therefore for maximum lateral shift, the maximum incident angle is 90 degrees.