Question

Lateral shift produced by a glass slab is X. When the slab is immersed in a liquid, for the same incident ray lateral shift produced will be

• A. $X$
• B. Greater than $X$
• C. Less than $X$
• D. Zero

Answer 1

Answer: (B)

Greater than $X$

Answer 2

Lateral shift is given by,
$X = \frac{t \sin\left(i -r\right)}{\cos r} = \frac{t \sin \delta }{\cos r}$
When glass is placed in liquid and the same incident ray is used then lateral shift will be greater than $X$ because angle of deviation $(\delta )$ increases.