Total Internal Reflection

Practice Questions:

Question 1: easy

If the critical angle for total internal reflection from a medium to vacuum is 30°, the velocity of light in the medium is

1. \[3\times 10^{8} m/s \]

2. \[1.5\times 10^{8} m/s \]

3. \[6\times 10^{8} m/s \]

4. \[\sqrt{3}\times 10^{8} m/s \]

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