The study of the properties of light that depend on wavelength is <u>spectroscopy</u>
Explanation:
Spectroscopy is the study of the spectra produced due to the interaction of object or matter with electromagnetic radiations
When light travels through an object, it absorbs and emits light and disperses into a spectrum of its component colors; similar to the pattern of spectral rays observed when light travels through a prism.
Any electromagnetic radiation including the visible light depends upon its properties like frequency, wavelength, and velocity
<em>They are exothermic as they take temperature from the surrounding and then maintain their internal body temperature according to the amount of heat absorbed :)</em>
