Question

A ray of yellow light ( f = 5.09 × 1014 Hz) travels at a speed of 2.04 × 108 meters per second in

Answer 1

glycerol or corn oil!!! -----> n=c/v----> (3x10^8) / (2.04x10^8)= 1.47

Answer 2

As we know that refractive index is given as

`n = (speed \ of \ light \ in \ air)/(speed \ of \ light \ in \ medium)`

now we know that

speed of light in medium =
`2.04 * 10^8` m/s

now refractive index is given as

`n = (3 * 10^8)/(2.04 * 10^8)`

`n = 1.47`

now we know that refractive index of glycerine is 1.473

So here this material will be GLYCERINE