Question

What is polychromatic light and monochromatic light

Answer 1

The term monochromatic comes from the Greek words mono, meaning single, and chroma, meaning color. So monochromatic light literally means light of one color. In scientific terms, it means light of a single wavelength. The term poly-chromatic means having several colors. It is used to describe light that exhibits more than one color, which also means that it contains radiation of more than one wavelength. The study of poly-chromatics is particularly useful in the production of diffraction gratings. 

Answer 2

Hi mate

Polychromatic light:

Light is called polychromatic when it has multiple optical frequencies, i.e., if it is not monochromatic. In some cases, polychromatic light has a mixture of some number of discrete wavelength components, while in other cases its optical spectrum is continuous.

Monochromatic light:

The term monochromatic originally means having only a single color. Different optical wavelengths of visible light are associated with different perceived colors. However, light colors are rarely a criterion for monochromaticity in practice, and non-monochromatic light can also have specific colors.

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