Question

what will be the absolute Refractive Index of a material of the speed of line in it is 2×10^8m/s​

Answer 1

Explanation:

$\huge\red{\underline{\underline{\bf Question}}}$

what will be the absolute Refractive Index of a material of the speed of light in it is 2×10^8m/s

$\huge\red{\underline{\underline{\bf Answer}}}$

$\implies \\ \underline{speed \: of \: light = 3 \times {10}^{8} } \\ \\ \underline{given \: speed \: of \: light \: in \: medium = 2 \times {10}^{8} } \\ \\ \mu = ? \\ \\ \implies \mu = \frac{c}{v} \\ \\ \implies \mu = \frac{3 \times \cancel{{10}^{8}} }{2 \times \cancel{{10}^{8}} } \\ \\ \implies \mu = \frac{3}{2} \\ \\ \huge \boxed{ \implies \mu = 1.5}$

Answer 2

$\Huge{\underline{\underline{\red{\mathfrak{Answer :}}}}}$

Given :

• Absolute Refrective index of a material is 2 * 10^ 8 m/s

Solution :

As we know that,

Speed of light in Air is 3 × 10^8

And, For finding Refractive Index we have formula :

$\Large{\underline{\boxed{\sf{\mu \: = \: \frac{Speed \: of \: light \: in \: air}{Speed \: of \: light \: in \: medium}}}}}$

Putting Values

$\Large \leadsto {\sf{\mu \: = \: \frac{3 \: \times \: \cancel{10^{8}}}{2 \: \times \: \cancel{10^{8}}}}}$

$\Large \leadsto {\sf{\mu \: = \: \frac{3}{2}}}$

$\Large{\boxed{\red{\sf{\mu \: = \: 1.5}}}}$