Amonochromatic (single frequency, single wavelength) light ray in air (n= 1) enters
Amonochromatic (single frequency, single wavelength) light ray in air (n= 1) enters a glass prism (n= 1.5). in the glass prism a. both the frequency and the wavelength are the same as in air b. the frequency is the same, but the wavelength is greater than in air. c. the frequency is the same, but the wavelength is smaller than in air.