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A light whose electric field vectors are completely removed by using a good polaroid, allowed to incident on the surface of the prism at Brewster's angle. Choose the most suitable option for the phenomenon related to the prism.

Asked in JEE Main 25th June 2nd Shift 2022 · Brewster's law and polarisation by reflection

• (1) Reflected and refracted rays will be perpendicular to each other.
• (2) Wave will propagate along the surface of prism.
• (3) No refraction, and there will be total reflection of light.
• (4) No reflection and there will be total transmission of light.

Step-by-step solution

Why the other options are wrong

• (1) States the Brewster geometry for unpolarised light, but here the component that could reflect has been removed, so there is no reflected ray.
• (2) Confuses Brewster's angle with the grazing emergence at the critical angle.
• (3) Confuses Brewster incidence with total internal reflection, which needs incidence from a denser medium beyond the critical angle.

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