CUET Preparation Today
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$\text{When reflected light is totally polarizrd then reflected and refracred light is perpendicular to each other}$ $\Rightarrow i+r= 90^0 , r = 90^0 -i$ $\text{ From Snell's law } \frac{sin i}{sin r} = n, \Rightarrow \frac{sin }{sin(90^0 -i)} = n$ $\Rightarrow tan i = n , \Rightarrow i = tan^{-1} n$ |
