A glass prism of refractive index 1.5 is immersed in water (refractive index 4/3). A light beam incident normally on the face 
is totally reflected to reach on the face 
if
A
B
C
D
None of these
Text Solution
Verified by ExpertsThe correct answer is:
A
The phenomenon of total internal reflection takes place during reflection at 
.
When 
is the angle of incidence at 
Now, 
Putting in (i), 
should be greater than or equal to 
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