Question

how to find critical angle explanation​

Answer 1

Answer:

The critical angle can be calculated from Snell's law by setting the refraction angle equal to 90°. For any angle of incidence less than the critical angle, part of the incident light will be transmitted and part will be reflected.

Answer 2

Answer:

If this information is substituted in the Snell's Law equation, a generic equation can be obtained to predict the critical angle. The critical angle = the inverse function of the sine (refraction index / incident index). We have: θcrit = The critical angle.

Explanation:

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