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Problem
Problem
A prism can have a maximum refracting angle of (
θ
C
\theta_C
θ
C
= critical angle for the material of prism) a.
60
∘
60^\circ
6
0
∘
b.
θ
C
\theta_C
θ
C
c.
2
θ
C
2\theta_C
2
θ
C
d. slightly less than
180
∘
180^\circ
18
0
∘
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