A light is travelling from air into a medium. Velocity of light in a medium is reduced to 0.75 times the velocity in air. Assume that angle of incidence ' 
' is very small, the deviation of the ray is
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
C
: Given situation is shown in the figure.
Refractive index of medium, 
Deviation of ray, 
?
Using Snell's law at the interface of media,
(1) 
Since 
and 
is very small so, 
and 
then, 
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