What is the wavelength of white/ colorless light?
White light is a combination of all the visible spectrum so it doesn't have A Wavelength. The visible spectrum is between 380 and 750 nm
but here is a question: we know that when an object get therm into a specific temprature it will look white so is radiation wavelength from it a mixture of different colors?
It contains all the wavelengths of the spectrum. Kind of like daylight