For the same angle of incidence, the angles of refraction of media ' P ', ' Q ', ' R ' and ' S ' are 50^ ,40^ , 30^ ,20^ respectively. The speed of light is minimum in medium

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Accepted Answer

Correct answer: D. (d) : According to Snell's law sin ⁡i= sin ⁡r [From air to a medium] = sin ⁡i sin ⁡r Let v be speed of light in the medium. v= c = c ( sin ⁡r )/ ( sin ⁡r )= ( c sin ⁡i ) sin ⁡r For a given angle of incidence, y ∝ sin ⁡r ∴ v_P>v_Q>v_R>v_S Hence, the speed of light in medium S is minimum.

$For the same angle of incidence, the angles of refraction of media ' ', ' ', ' ' and ' ' are , respectively. The speed of light is minimum in medium$

Solution

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