NEET2018Physics-Optics
NEET 2018 Physics Polarization MCQ Question
Type: MCQ-conceptual-Medium-Class 12
Unpolarised light is incident from air on a plane surface of a material of refractive index 'μ'. At a particular angle of incidence 'i', it is found that the reflected and refracted rays are perpendicular to each other. Which of the following options is correct for this situation?
A
Reflected light is polarised with its electric vector parallel to the plane of incidence
B
Reflected light is polarised with its electric vector perpendicular to the plane of incidence
C
i = sin⁻¹(1/μ)
D
i = tan⁻¹(1/μ)
Correct Answer
Option A
Detailed Explanation
When reflected and refracted rays are perpendicular, the angle of incidence is the Brewster's angle, given by i = tan⁻¹(1/μ).
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