The limiting angle of incidence for an optical ray that can be transmitted by an equilateral prism of refractive index μ=√7/3 is given by(angles can be assumed to be small, so that sine of the angle is angle itself)

Options

(a) π/3
(b) π/6
(c) 2π/3
(d) π/2

Correct Answer:

π/6

Explanation:

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