why does light speard in spectrum?
Answers
Answer:
Electromagnetic spectrum and visible light The behavior of EMR depends on its wavelength. Higher frequencies have shorter wavelengths, and lower frequencies have longer wavelengths. When EMR interacts with single atoms and molecules, its behavior depends on the amount of energy per quantum it carries.
Light spread in spectrum means Dispersion of light !!
Explanation :-
Firstly,
Dispersion of Light :- The phenomenon of splitting up of white light into its constituent colours on Passing through a prism is called Dispersion of Light.
The Band of Colours (VIBGYOR) obtained is called Spectrum of light.
Explanation of How and what Causes Dispersion Of Light :-
The speed of light in vacuum is same for all wave lengths but the speed in a medium is different for different wavelengths.
This means that the reflective index of a particular medium is different for different wavelengths..
Overall it means Refrective index decreases for increasing wavelengths. High Refrective index means more bending of ray of light.
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