In the diagram below, the index of refraction of the air surrounding the prism is 1.00. The index of refraction of the prism for green-blue light is 1.35. What must be true about the index of refraction of the prism for violet light?

prism diagram
A. The prism's index of refraction for violet light is greater than 1.35.
B. The prism's index of refraction for violet light is equal to 1.35.
C. The prism's index of refraction for violet light is less than 1.35.
D. Nothing can be determined about the prism's index of refraction for violet light.

A. The prism's index of refraction for violet light is greater than 1.35.

This is because violet light has a shorter wavelength and higher frequency than green-blue light. Therefore, the index of refraction for violet light will typically be greater than the index of refraction for green-blue light.