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  4. 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

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Q. 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

COMEDKCOMEDK 2006Ray Optics and Optical Instruments

Solution:

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.