A ray of light is incident on a pool with three layers of liquid in it at an angle of 75.0°. The top layer is 20.0m deep and has an index of refraction of 1.33. The middle layer is also 20.0m deep and has an index of refraction of 2.00. The bottom layer is 25.0m deep and has an index of refraction of 2.50. At the bottom of the pool there is a mirror that reflects the light back towards the surface. Calculate the time that the ray of light is in the pool, in other words the time taken between points A nd B. Use the speed of light in a vacuum c = 3 * 108 m/s. n₁ = 1.00 n2 = 1.33 n3 = 2.00 75.0⁰ A B 12 = 20.0m 13 = 20.0m

A ray of light is incident on a pool with three layers of liquid in it at an angle of 75.0°. The top layer is 20.0m deep and has an index of refraction of 1.33. The middle layer is also 20.0m deep and has an index of refraction of 2.00. The bottom layer is 25.0m deep and has an index of refraction of 2.50. At the bottom of the pool there is a mirror that reflects the light back towards the surface. Calculate the time that the ray of light is in the pool, in other words the time taken between points A nd B. Use the speed of light in a vacuum c = 3 * 108 m/s. n₁ = 1.00 n2 = 1.33 n3 = 2.00 75.0⁰ A B 12 = 20.0m 13 = 20.0m

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