Question

The speed of light in
substance X is 1.25x 10^8m/s
and that in air is 3x10^8m/s.
The refractive index of this
substance will be
​

Answer 1

Answer:

The Refractive index is 2.4

Hope it helps

Answer 2

Answer:

SUBSTANCE X =

$1.25 \times \: {10}^{8} m \: s$

IN THE AIR Y=

$3 \times {10}^{8} m \: s$

= X×Y =

$1.25 \times \: {10}^{8} m \: s 3 \times {10}^{8} m \: s$

HENCE THE REFERENCE INDEX IS 2.4