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Q.

A ray of light is incident from a rarer medium (μ=1.5) into a denser medium. If the angle of incidence and refraction are respectively 60o and 45o, then calculate the refractive index of the denser medium. 

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a

33/22

b

3

c

1

d

32

answer is D.

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Detailed Solution

μrarer=1.5, i=600,r=450

μdenser=?

μrarersini=μdensersinr

⇒1.5×sin600=μdensersin450

μdenser=1.5×600sin450

μdenser=1.5×3/21/2=1.5×3×22=1.84

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