Question

. If the speed of light in vacuum is 3X108 ms-1, find the speed of light in a medium of absolute refractive index 1.5.

Answer 1

Answer:

speed of light in a medium = 2*10^8 m/s

Explanation:

Speed of light in vacuum = 3 x 10 ^8

Refractive index = 1.5

1.5 = 3 *10^8 /x    (x here stands for the speed of light in a medium )

X = 3*10^8/1.5

X=2*10^8

Answer 2

Answer:

$x = 2 \times 10 {}^{8}$