Question

An ordinary light is incident on a material from air
at an angle of 76°. It is found that reflected light
is plane polarised, then refractive index of the material is
(1) 2.5
(3) 3.5
(4) 4.0
(2) 3.0
​

Answer 1

Answer:

if the reflected light ray is plane polarised and given angle is 76°. Then the refractive index would be 3.5