The speed of light in media 
and 
are 
and 
respectively. A ray travels from medium 
to the medium 
with an angle of incidence 
. The ray suffers total internal reflection. Then the value of the angle of incidence 
is
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
A
: Given, 
.
Refractive index for medium 
is
Refractive index for medium 
is
If 
is the angle of incidence and 
is the critical angle, then for total internal reflection
But 
or 
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