An unpolarised beam is incident at an angle 60° an a glass surface and after reflection it is linearly polarised. The approximate refractive index of the glass is:

An unpolarised beam is incident at an angle 60° an a glass surface an

1.	An unpolarised beam is incident at an angle 60° an a glass surface and after reflection it is linearly polarised. The approximate refractive index of the glass is:
A.	1.4
B.	1.5
C.	1.7
D.	1.6
Answer» D. 1.6

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An unpolarised beam is incident at an angle 60° an a glass surface and after reflection it is linearly polarised. The approximate refractive index of the glass is:

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