Question

the absolute refractive indexes of glass and water are 1.5 and 1.33 . in which medium does light travel faster? calculate the ratio of speeds of light in the two medium​

Answer 1

Given:

• The absolute refractive indexes of glass and water are 1.5 and 1.33.

To Find:

• Ratio of speeds of light in the two medium.

Solution:

Formula used:

★ u = c/v

Putting the values:-

◑ v1 = c/u1

→ v1 = 3 × 10^8 / 1.5

→ v1 = 2 × 10^8 --(i)

◑v2 = c/u2

→ v2 = 3 × 10^8 / 1.33

→ v2 = 2.25 × 10^8 --(ii)

So,

• v2 > v1