Red light and Violet light travel during air and strike a block of plastic at the same angle of incidence. The angle of refraction is 31.220° for the red light and 30.620° for the violet light. The index of refraction for violet light in plastic is greater than that for red light by 0.0490. Delaying any rounding off of calculations until the very end, discover the index of refraction for violet light in plastic.