For the same angle of incidence, the angles of refraction in media `P, Q and R` are `35^(@) ,25^(@), 15^(@)` resp. In which medium will the velocity of light be minimum ?
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For medium `R`, angle of refraction (r ) is minimum. Therefore, `mu = (sin i)/(sin r)` is maximum . As `mu = ( C)/(v)`, therefore, `v` is minimum, i.e., velocity of light is minimum in medium `R`.
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