Question

The Refractive Index Of Kerosene Is 1.44 . Find The Speed Of Light In Kerosene .

Answer 1

Speed of light in vacuum=3×10⁸m/sec
Let the speed of light in kerosene be 'x' m/sec.
Given refractive index of Kerosene=1.44
We have,
Refractive index=speed of light in vacuum/speed of light in medium
⇒1.44=3×10⁸/x
⇒x=3×10⁸/1.44
⇒x=2.08×10⁸m/sec.
Therefore, the speed of light in Kerosene=2.08×10⁸m/sec.

Answer 2

The Speed Of Light in Kerosene is $2.08\times 10^8m/s$

Explanation:

$Refractive\ index=\frac{speed\ of\ light\ in\ vacuum}{speed\ of\ light\ in\ medium}$

The Refractive Index Of Kerosene Is 1.44 .

The speed of light in a vacuum is $3\times 10^8m/s$

$1.44=\frac{3\times 10^8}{speed\ of\ light\ in\ medium}$

$speed\ of\ light\ in\ medium=\frac{3\times 10^8}{1.44}$

$speed\ of\ light\ in\ medium=2.08\times 10^8m/s$

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