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