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The refractive index of a material is 1.75. What is the polarizing angle?

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The refractive index of a material is 1.75. What is the polarizing angle?

(a) 47.23°

(b) 51.02°

(c) 53.74°

(d) 60.25°

I got this question in class test.

Question is taken from Production of Plane Polarised Light in division Polarisation of Engineering Physics II

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Correct answer is (d) 60.25°

The explanation: Using Brewster’s Law, Angle of incidence = tan^-1μ

= tan^-11.752

= 60.25.

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