Let v1 the velocity of light in air and v2 the velocity of light in water. According
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According to Fermat€™s Principle, a ray of light will travel from a point A in the air to a point B in the water by a path ACB that minimizes the time taken. Show that sinθ1/sinθ2 = v1/v2 where θ1 (the angle of incidence) and θ2 (the angle of refraction) are as shown. This equation is known as Snell€™s Law.
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X C dx b B The total time is Tx ...View the full answer
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