meaning of ri is 2.41
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it means speed of light in that medium is 2.41 times less than that on vaccum
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Here ri stands for refractive index .
ri =2.41 means that speed of light in medium with ri 2.41 is 1/2.41 times the speed in vacuum.
because ri =c/v
so 2.41 =c/v
or v=c/2.41
ri =2.41 means that speed of light in medium with ri 2.41 is 1/2.41 times the speed in vacuum.
because ri =c/v
so 2.41 =c/v
or v=c/2.41
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