Ray Optics and Optical Instruments

Question: The refractive index of water is 4 / 3 and that of glass is 5/3. What will be the critical angle for the ray of light entering water from the glass

1) ${{\sin }^{-1}}\frac{4}{5}$

2) ${{\sin }^{-1}}\frac{5}{4}$

3) ${{\sin }^{-1}}$$\frac{1}{2}$

4) ${{\sin }^{-1}}\frac{2}{1}$

Solution:

Explanation: No Explanation

Total Internal Reflection

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