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An equilateral prism deviates a ray thro...

An equilateral prism deviates a ray through `40^@` for two angles of incidence differing by `20^@`. The possible angles of incidences is

A

`40^(@)`

B

`50^(@)`

C

`20^(@)`

D

`60^(@)`

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The correct Answer is:
a,d
N//a
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RESONANCE-GEOMATRICAL OPTICS -Exercise-2
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