Statement-I: If a red color light gets refracted; it will still remain red in color after refraction.
Statement-II: Color depens on frequency, on refraction, the wavelength of the light changes.
Statements I and II both are correct and II explains I
Here, both the statements are correct and statement II is the reason of statement I. Color is related to frequency which has nothing to do with the medium, it only depends on the source.