Question

E-11.
In which figure lateral displacement will be larger if a ray of light of same wavelength is incident on a
plane glass slab:
tsin(ir)
30°
45°
(A)
60°
(C)
(B)
(D) Same in all cases​

Answer 1

Answer:

60

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Answer 2

c) 60°

ExPlanation:-

First of all, lateral displacement is distance b/w incident ray and emergent ray. [Look at attachment please]

Now, this distance(Lateral displacement) depends upon, these factors—

• Angle of incidence ↑ — Lateral displacement ↑
• Refractive index of glass slab ↑ — Lateral displacement ↑
• Thickness of glass slab ↑ — Lateral displacement ↑
• Wavelength ↓ — Lateral displacement ↑

Just forget all the them rather than the first one, according to which with increase in angle of incidence, lateral displacement increases as well.

So,

From 30°,45°&60°, which will have the largest lateral displacement, ofc 60°. [for practically results, again attachment]

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