Ray Optics and Optical Instruments

Question: A ray of light propagates from glass (refractive index = 3/2) to water (refractive index = 4/3). The value of the critical angle



1) ${{\sin }^{-1}}(1/2)$
2) ${{\sin }^{-1}}\left( \frac{\sqrt{8}}{9} \right)$
3) ${{\sin }^{-1}}(8/9)$
4) ${{\sin }^{-1}}(5/7)$
Solution: Explanation: No Explanation
Total Internal Reflection

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