Categories > Ray Optics and Optical Instruments > Total Internal Reflection > A diver at a depth of $12m$ in water ($\mu =4/3)$sees the sky in a cone of semi-vertical angle

Ray Optics and Optical Instruments

Question: A diver at a depth of $12m$ in water ($\mu =4/3)$sees the sky in a cone of semi-vertical angle


1) ${{\sin }^{-1}}(4/3)$
2) ${{\tan }^{-1}}(4/3)$
3) ${{\sin }^{-1}}(3/4)$
4) 90°
Solution: Explanation: No Explanation
Total Internal Reflection

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