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NEET 2010 (AIPMT, Mains) · Prism, Dispersion & Scattering

Prism, Dispersion & Scattering question from NEET 2010 (AIPMT, Mains)

Q87NEET 2010 · AIPMT · MAINSEasy

Prism, Dispersion & Scattering

A ray of light is incident on a 60° prism at the minimum deviation position. The angle of refraction at the first face (i.e., incident face) of the prism is

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Answer: (b)

At minimum deviation $r_1 = r_2$ and $r_1 + r_2 = A$ .
$r_1 = A/2 = 60^\circ/2 = 30^\circ$
So the answer is (b) $30^\circ$ .

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