What is multichromatic light?

Hint:To know what is multichromatic light you should first know about what is a monochromatic light. Light of a single wavelength is known as monochromatic light. The term light signifies the visible and near-visible portions of the electromagnetic radiation.These radiations exist over a huge range of wavelengths, ranging from picometers to kilometres. This range of wavelengths is collectively referred to as the electromagnetic spectrum.

Complete answer:
Usually, the light we see around us exists with multiple wavelengths or frequencies.Monochromatic light is light that has only one wavelength or frequency. Sunlight has multiple frequencies or wavelengths of light in them so they are called polychromatic light.Monochromatic light, or one-color light, is essentially electromagnetic radiation derived from photon emissions from atoms. Photons propagate, or travel, as energy wave fronts of different lengths and levels of energy.

The light consisting of a single wavelength is called monochromatic light and the light consisting of a broad range of wavelengths is called multichromatic light. As for example, the white light is polychromatic because it’s a combination of different wavelengths, blue or red or any coloured lights are monochromatic.

For example, White light is a combination of several wavelengths corresponding to different colours of light. Hence, the white light is considered to be multichromatic. As said, sunlight is an example of polychromatic light. This is because sunlight consists of different frequencies or wavelengths.

Note: To obtain light of specific wavelength, one must use a form of light filter known as a monochromator to filter the unwanted wavelengths. Monochromators are generally variable so that different wavelengths can be selected at different times for different applications. Different chemicals will absorb or emit specific wavelengths of light, so this can be a diagnostic tool for chemical identification.