Define refractive index. Write the refractive index of water
Answers
Explanation:
It is defined as. where c is the speed of light in vacuum and v is the phase velocity of light in the medium. For example, the refractive index of water is 1.333, meaning that light travels 1.333 times as fast in vacuum as in water.
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Answer:
The ratio of the speed of light in medium 1 to the speed of light in medium 2 is called refractive index.
water has a refractive index of 0.99999974 = 1 − 2.6×10−7 for X-ray radiation at a photon energy of 30 keV (0.04 nm wavelength).
Explanation:
The ratio of the speeds of light in a given pair of media, gives us a measure of the extent of refraction of a ray of light as it goes from one of these media to the other. We use this ratio to define a term called the relative refractive index.
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