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Refraction of Light through a Prism

A given ray o...

Question

A given ray of light suffers minimum deviation in an equilateral prism $P .$ Additional prisms $Q$ and $R$ of identical shape and of the same material as $P$ are now added as shown in the figure. The ray will now suffer

A

greater deviation

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B

no deviation

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C

same deviation as before

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D

total internal reflection

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Solution

The correct option is C same deviation as before
$sin ∠ A$ and $∠ i$ remains the same $∠ δ$ is same.

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