An equilateral prism is placed on a horizontal surface. A ray PQ is incident onto it. For minimum deviation

(IIT-JEE 2004)

PQ is horizontal

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QR is horizontal

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RS is horizontal

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Any one will be horizontal

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Solution

The correct option is B QR is horizontal
For minimum deviation;
i = e and
$r_{1} = r_{2}$
for that; QR should be horizontal as the prism is equilateral.

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An equilateral prism is placed on a horizontal surface. A ray PQ is incident onto it. For minimum deviation (IIT-JEE 2004)

The correct option is B QR is horizontal For minimum deviation; i = e and r1=r2 for that; QR should be horizontal as the prism is equilateral.

An equilateral prism is placed on a horizontal surface. A ray PQ is incident onto it. For minimum deviation

(IIT-JEE 2004)

The correct option is B QR is horizontal
For minimum deviation;
i = e and
$r_{1} = r_{2}$
for that; QR should be horizontal as the prism is equilateral.