What is the relationship between the frequency of light and refraction?

The refractive index of a medium is dependent (to some extent) upon the frequency of light passing through, with the highest frequencies having the highest values of n. It also changes the wave speed, frequency, and wavelength.. Although the wave slows down, its frequency remains the same, due to the fact that its wavelength is shorter. When waves travel from one medium to another the frequency never changes. As waves travel into the denser medium, they slow down and wavelength decreases

Explanation:

the higher the frequency the greater the index of refraction

Explanation:The index of refraction of any material besides vacuum varies slightly with the frequency of light too soo basically the more or higher the frequency the greater the refraction (index of refraction)

For example

Say you have green or red light which they have lower frequency that blue or purple

So the index of refraction will be lower

object 2 because all the other ones are wrong