1.

If the speed of light in a mediumis 1.5xx 10^(8) m/s, what is the absolute refractive index of the medium?

Answer»

Solution :Given : Velocity of light in vacuum `(v_(1))=3xx10^(8)` m/s
Velocity of light in medium `(v_(2))=1.5xx10^(8)` m/s
To FIND : Absolute refractive index (n)
FORMULA : Absolute refractive index = `("Velocity of light in vacuum")/("Velocity of light in medium")`
Solution : Absolute refractive index (n) `("Velocity of light in vacuum"(v_(1)))/("Velocity of light in medium"(v_(2))`
`therefore n =(3xx10^(8))/(1.5xx10^(8))`


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