The speed of light in media M1 and M2 are 1.5 $ \times $ 108 m/s and 2.0 $ \times $ 108 m/s respectively. A ray of light enters from medium M1 to M2 at an incidence angle i. If the rays suffers total internal reflection, the value of i is

Question

The speed of light in media M₁ and M₂ are 1.5 $ \times $ 10⁸ m/s and 2.0 $ \times $ 10⁸ m/s respectively. A ray of light enters from medium M₁ to M₂ at an incidence angle i. If the rays suffers total internal reflection, the value of i is

Equal to sin^$-$1 $\left( {{2 \over 3}} \right)$

Equal to or less than sin^$-$1$\left( {{3 \over 5}} \right)$

Equal to or greater than sin^$-$1 $\left( {{3 \over 4}} \right)$

Less than sin^$-$1$\left( {{2 \over 3}} \right)$

Solution

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