# Solve the Example. If the Speed of Light in a Medium is 1.5 × 108 M/S, What is the Absolute Refractive Index of the Medium? - Science

Short Note

Solve the example.
If the speed of light in a medium is 1.5 × 108 m/s, what is the absolute refractive index of the medium?

#### Solution 1

$\text{ Absolute refractive index of a medium } , \mu = \frac{\text{ Speed of light in air} }{\text{ Speed of light in the medium } }$
$\Rightarrow \mu = \frac{3 \times {10}^8}{1 . 5 \times {10}^8} = 2$

#### Solution 2

v=1.5 × 108𝑚/𝑠,𝑐=3× 108𝑚/𝑠 , n=?
n = c/v
n = (3× 10^8)/(1.5 × 10^8)
n = 2
absolute refractive index of the medium is 2.

Is there an error in this question or solution?