IGNOU PHE 9 2026 - Describe polarisation of light by reflection. How does degree of polar

Question

Describe polarisation of light by reflection. How does degree of polarisation vary with angle of incidence of light?

28 Jan 2026

Answer :

Word Count : 250

Polarisation of light by reflection occurs when unpolarised light strikes a transparent surface, such as glass or water, at a particular angle and the reflected light becomes partially or completely polarised. Unpolarised light consists of waves vibrating in all possible planes perpendicular to the direction of propagation. When it hits a surface, the electric field components parallel and perpendicular to the plane of incidence behave differently. The component parallel to the plane of incidence is reflected more strongly, while the perpendicular component is transmitted or absorbed differently. At

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