A ray of light is incident from the air n₁ = 1.00 onto a pool containing two liquids at the angle 65%. The top liquid is water with an index of refraction n₂ = 1.33 and the bottom liquid is a mysterious dense fluid with index of refraction n3 = 2.5 If the water layer is l₂ = 25m in thickness and the other fluid is l3 = 20m in thickness. At the bottom of this pool is a mirror the light will reflect off, as seen in the image below. How long does it take light between entering and exiting the pool? n₂ n3 0₁ 1₂ 13

A ray of light is incident from the air n₁ = 1.00 onto a pool containing two liquids at the angle 65%. The top liquid is water with an index of refraction n₂ = 1.33 and the bottom liquid is a mysterious dense fluid with index of refraction n3 = 2.5 If the water layer is l₂ = 25m in thickness and the other fluid is l3 = 20m in thickness. At the bottom of this pool is a mirror the light will reflect off, as seen in the image below. How long does it take light between entering and exiting the pool? n₂ n3 0₁ 1₂ 13