light has what range of wavelength
Are you talking about the human visible spectrum?
https://www.google.com/search?client=safari&rls=en&q=light+wavelengths+spectrum&ie=UTF-8&oe=UTF-8
https://www.google.com/search?client=safari&rls=en&q=light+wavelengths+spectrum&ie=UTF-8&oe=UTF-8