Ray Optics and Optical Instruments

Question: Glass has refractive index $\mu$ with respect to air and the critical angle for a ray of light going from glass to air is $\theta$. If a ray of light is incident from air on the glass with angle of incidence $\theta$, the corresponding angle of refraction is



1) ${{\sin }^{-1}}\left( \frac{1}{\sqrt{\mu }} \right)$
2) ${{90}^{o}}$
3) ${{\sin }^{-1}}\left( \frac{1}{{{\mu }^{2}}} \right)$
4) ${{\sin }^{-1}}\left( \frac{1}{\mu } \right)$
Solution: Explanation: No Explanation
Total Internal Reflection

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