How does the speed of light in glass depends on the frequency

Frequency is of light depends upon the body that emits it. While wavelength depends on the medium through which it travels in vacuum the product of wavelength and frequency is the same while in other mediums the light of higher wavelength travels faster besed on refractive index. So light velocity depends on both frequency and wavelength.

Explanation:

the electric field is a “force field” around a charged object that illustrates the direction the electric force would push an imaginary 

what is the actual question though?