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Minimum Deviation

Light rays fr...

Question

Light rays from a source are incident on a glass prism of index of refraction $μ$ and angle of prism $α$ . At near normal incidence, the angle of deviation of the emerging rays is

A

(μ - 2) α

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B

(μ - 1) α

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C

(μ + 1) α

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D

(μ + 2) α

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Solution

The correct option is B $(μ - 1) α$
As we know,
$δ_{m} = (μ - 1) A . w h e r e, A =$ angle of prism.

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