Question

What would be the lateral displacement when a light beam is incident normally on a glass slab?

Answer 1

Dear Student,

◆ Answer -

Lateral displacement will be zero when a light beam is incident normally on a glass slab.

● Explanation -

When light beam incides normally on a glass slab,

n = sini / sinr

n.sinr = sin0°

n.sinr = 0

sinr = 0 ...(because n≠0)

r = 0°

Hence, light rays don't bend but they just pass straight through the glass slab when incident normally.

As there is deviation of light, lateral displacement will be zero in this case.

Hope this helps you...