Ray Optics and Optical Instruments

Question: If light travels a distance x in ${{t}_{1}}$sec in air and 10 x distance in ${{t}_{2}}$sec in a medium, the critical angle of the medium will be

1) ${{\tan }^{-1}}\left( \frac{{{t}_{1}}}{{{t}_{2}}} \right)$

2) ${{\sin }^{-1}}\left( \frac{{{t}_{1}}}{{{t}_{2}}} \right)$

3) ${{\sin }^{-1}}\left( \frac{10{{t}_{1}}}{{{t}_{2}}} \right)$

4) ${{\tan }^{-1}}\left( \frac{10{{t}_{1}}}{{{t}_{2}}} \right)$

Solution:

Explanation: No Explanation

Total Internal Reflection

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