Question

For a material of refractive index 1.42, calculate the polarising angle for a beam of unpolarised light incident on it.

Answer 1

Answer:

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Answer 2

Hey Dear,

● Answer -

Polarising angle = 54.85°

# Solution -

Polarizing angle is angle of incidence at which light rays are completely polarized without any deflection. Aka Brewster's angle.

Refractive index of a medium is related to polarizing angle by formula

n = tan(p)

Taking tan inverse,

p = arctan(n)

Substitute value of n,

p = arctan(1.42)

p = 54.85°

Therefore, polarizing angle for the material is 54.85°.

Thanks dear.