The Dependence of the Index of Refraction on Wavelength Is $\circ$

Multiple Choice

The dependence of the index of refraction on wavelength is called dispersion.A beam of light (in air) containing red and blue light is incident at an angle of 35 ^$\circ$ on a glass plate that has an index of refraction of 1.64 for blue light and 1.61 for red light.Calculate the angle between the red and blue light inside the glass.

A) 1.3 ^$\circ$
B) 0.40 ^$\circ$
C) 0.56 ^$\circ$
D) 0.74 ^$\circ$
E) 0.13 ^$\circ$