The refractive index of the medium M in the diagram above is
-
A.
1/√3 -
B.
2√3 -
C.
√3 -
D.
2/√3
Correct Answer: Option C
Explanation
From the above diagram ; ? = 90o – 30o = 60o
v = 90 – 60 = 30
∴ refractive index = (sin ?)/(sin v) = (sin 60o / sin 30o) = √3/2/1/2
= √3/2 x 1/2
= √3