Correct Answer: dispersion

Solution : The correct answer is dispersion .

The splitting of white light into its component colours is called "dispersion". This phenomenon occurs because different colours of light have different wavelengths, and when light passes through a prism or a similar optical element, it gets separated into its constituent colours, creating a spectrum. The spectrum has seven colours. The order of colours in a typical spectrum, from longest to shortest wavelength, is red, orange, yellow, green, blue, indigo and violet.