If the refractive index of a medium in air is 2.0, what is the critical angle for this medium?
a
30o
b
42o
c
45o
d
50o
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Malachymartin
3 years ago
Refractive index (n) = 1/sinC
n=2
SinC=?
Then SinC=1/2
Sin invers of 1/2 = 30


