A ray of laser of a wavelength 630 nm is incident at an angle of 30$^\circ$ at the diamond-air interface. It is going from diamond to air. The refractive index of diamond is 2.42 and that of air is 1. Choose the correct option.
Solution
$\sin {\theta _C} = {1 \over \mu } = {1 \over {2{\mu _2}}} < \sin {\theta _C}$<br><br>sin$\theta$ > sin$\theta$<sub>C</sub><br><br>$\theta$ > $\theta$<sub>C</sub><br><br>Total internal reflection will happen.
About this question
Subject: Physics · Chapter: Optics · Topic: Reflection and Mirrors
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