If the angle of minimum deviation is of 60 ° for an equilateral prism, then the refractive index of the material of the prism is

Question

If the angle of minimum deviation is of 60 ° for an equilateral prism, then the refractive index of the material of the prism is, 1 . 41, 1 . 5, 1 . 6, 1 . 73

MARKS App · Accepted Answer

μ = sin ⁡ A + δ m 2 sin ⁡ A 2 For equilateral prism, ∠ A = 60 ° μ = sin ⁡ 60 ° + 60 ° 2 sin ⁡ 60 ° 2 = sin ⁡ 60 ° sin ⁡ 30 ° = 3 2 1 2 = 3 = 1.73

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