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Cakrwat the speed ot Light in a mediumwhese criical angl30 |
Answer» <p>Refractive index is given by, n = 1/Sin ic, where icis critical angle = 300So, n = 2As, n = c/v , where c - speed of light in vacuum and v is the speed of light in medium.So, speed of light in given medium (v) = c/n = 1.5×10^8m /sec</p> | |