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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
Ask EduPadi AI...
Correct Option: A

sin c = (\frac{1}{n}) = (\frac{1}{2})

c = sin-1((\frac{1}{n}))

= 30o

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