![]() Using the geometry we can find refraction angle Θ. ![]() ![]() ![]() Using Snell’s law we can find index of refraction of the medium ![]() By assuming index of refraction on air is one (n1 = 1). ![]() ![]() ![]() n2 = 1.9917 Index of refraction of the medium is 1.9917 Using above result we can find speed of light ray inside the medium ![]() C = speed of light (Approximately 3 x 108 m/s) ![]() ![]() ![]() Speed of light ray inside the medium is 1.506 x 108 m/s Using geometry we can find distance AB ![]() ![]() ![]() Distance from point A to B is 6.5 meters. Using the distance and velocity inside the medium we can find the time taken to light ray to travel from point A to B. Velocity = Distance / Time Time = Distance / Velocity Time = 6.5 m / 1.506 x 108 m/s Time = 4.316 x 10-8 s Time to light ray to travel from point A to B is 4.316 x 10-8 seconds. |