Question

d. The refractive index of a transparent medium is 1.8. Find the speed of light in that medium. Speed of light in air is 3 x 108 ms?​

Answer 1

n = refractive index

v = velocity of light in transparent medium

c = velocity of light

now,

n = c/v

1.8 = (3 × 10⁸)/v

v = 3 × 10⁸/ 1.8

v = 1.666 × 10⁸ m/s

The velocity of light in transparent medium is 1.666 × 10⁸m/s,,