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Q.

A parallel beam of natural light is incident at an angle of 58⁰ on a plane glass surface. The reflected beam is completely linearly polarized.
a) What is the angle of refraction of the transmitted beam?
b) What is the refractive index of the glass?

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a

45⁰,2.5

b

45⁰,1.6

c

32⁰,1.6

d

30⁰,2.0

answer is C.

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Detailed Solution

$\begin{array}{l} r = 90^{o} - θ_{p} = 90^{o} - 58^{o} = 32^{o}; \\ μ = \tan θ_{p} = \tan 58^{\circ} = 1.6 \end{array}$

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