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According to the Snell's law if an electromagnetic wave is incident in a medium (refractive index n1) on another medium (refractive index n2);

According to the Snell's law if an electromagnetic wave is incident in a medium (refractive index n1) on another medium (refractive index n2); Correct Answer The angle of refraction ($$\theta {\text{r}}$$) is given by $$\sin {\theta _2} = \frac{{{{\text{n}}_1}}}{{{{\text{n}}_2}}}\sin {\theta _{\text{i}}}$$

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