If the refractive index of a medium in air is 2... - JAMB Physics 1992 Question
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
correct option: a
sin c = \(\frac{1}{n}\) = \(\frac{1}{2}\)
c = sin-1\((\frac{1}{n})\)
= 30o
c = sin-1\((\frac{1}{n})\)
= 30o
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