Question

refractive index of alcohol is 1.36 and the speed of the light in air is 3 x 10 ^8 ms ^-1 what is the speed of the light in alcohol ​

Answer 1

Answer:

Given

Refractive index of alcohol with respect to air = na = 1.36

Speed of light in air = va = 3 X 10^8 m/s

Speed of light in alcohol = va= ?

We know,

n21 = ( Speed of light in medium1) / (Speed of light in medium 2)

=> na = (Speed of light in air) / (Speed of light in alcohol)

=> na = v / va

=> 1.36 = 3 X 10^8 / va

=> va = (3 X 10^8) /1.36 = 2.21 X 10^8 m/s