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Question

Find out the angle of refraction when a light travels from medium A to medium B.

Speed of light in A =2×108 m/s
Speed of light in B =3×108 m/s


A

sin1(43)

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B

sin1(12)

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C

sin1(34)

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D

sin1(13)

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Solution

The correct option is C

sin1(34)


According to Snell's law
μA sin i=μB sin rsin isin r=μBμAsin 30sin r=VairVBVairVA=VAVB=2×1083×108=23sin r=32×sin 30=34r=sin1(34)


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