Answer:
The prism refracts the light, breaking it into its different wavelengths and making a rainbow.
Step-by-step explanation:
A prism is a clear glass pyramid with identical faces. It is a special optical device.
Light wave can be defined as an electromagnetic wave that do not require a medium of propagation for it to travel through a vacuum of space where no particles exist.
White light is a type of light that comprises of all the colours that makes up the visible spectrum (ROYGBIV). It's the most common light humans interact with on a daily basis.
When white light is shined on a prism, the prism refracts the light, breaking it into its different wavelengths and making a rainbow. Thus, this lead to a phenomenon known as dispersion, which typically involves the separation of light into its full spectrum with respect to wavelength. Also, refraction causes dispersion in rainbows.
According to Sir Isaac Newton, refraction causes dispersion i.e the speration of white lights into its various wavelength.