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Question: Rainbows form because the refraction index depend on the wavelength of light. White light is incident on an equilateral triangular prism at an angle of incidence of 0; = 39.01°. The refractive index of red light is nred =1.478 and the refractive index of blue light is blue = 1.496. The refractive index of air (for both red and blue light) is nair = 1.000. 8₁ 60⁰ 60 nair 1.00 60 Figure 1. A ray of light travelling in air is incident on an equilateral block with refractive index n at an angle ; to the normal of the surface. Part 1) What is the angle of refraction for red and blue light respectively? Or,red O. °; or blue °;;, blue = Part 2) These refracted rays continue along a straight path until they are incident on another side of the prism. What is the angle of incidence of these rays on the prism wall? 0 'r,blue red Part 3) The light is once again bent as it leaves the prism. What is the angle of refraction as the light moves from the prism to air? red