A beam of light with red and blue components of wavelengths 670nm a bd 425nm, respectively, strikes a slab of fused quartz at an angle of 30 degrees. On refraction, the dissimilar components are are separated by an angle of 1.31 X 10^-3 rad. If the index of refraction of the red light is 1.4925, what is the index of refraction of the blue light?