gohan
Answered

what is refrective index what is the speed of light in vaccume air and liquid state 

Answer :

sankalpb3
refractive index is the ratio of velocity of light in vacuum to velocity of light in any another medium.
the speed of light in air is 186000 miles/second
the speed pf light in water is 225563010 meter/second
rushabh2601
The refractive index (symbol n) of a material is the ratio of the speed of light in a vacuum to its speed in the material .

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