Published by:
CGP EDU Academic Team
Published on: September 12, 2026
A ray of light is incident from air on a glass plate having thickness 
cm and refractive index 
. The angle of incidence of a ray is equal to the critical angle for glass-air interface. The lateral displacement of the ray when it passes through the plate is___x10 -2 cm. (given sin 15° =0.26)
Text Solution
Verified by ExpertsThe correct answer is:
52
(52)
Lateral displacement:
x = tsin(i-r)secr
x = 
sin(45 0 -30 0 )sec30 0
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