how how does the speed of light determine the optical density of a medium?
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Speed of light in denser medium is slow but refractive index is high
Speed of light in rarer medium is fast but refractive index is slow
Frequency doesn't change but wavelength changes
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The more optically dense that a material is, the slower that a wave will move through the material. ... So as the index of refraction value increases, the optical density increases, and the speed of light in that material decreases.
Key concept :-
optical density of medium :-
A measure of the transmittance through an optical medium. In spectroscopy, optical density is the measure of absorbance, and is defined as the ratio of the intensity of light falling upon a material and the intensity transmitted.
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