A boy uses the blue colour of light to find the refractive index of glass. He then repeats the experiment using the red colour of light. Will the refractive index be the same or different in the two cases? Give a reason to support your answer.

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Solution

Explanation:
Refractive index:
The Refractive index of a medium is also defined as the ratio of the speed of light in air or vacuum and the speed of light in that medium.
If the speed of light in air is c and the speed of light in the medium is v then the refractive index of the medium is articulated as,
$Refractive Index Of Medium$
Reason:
The Refractive index will be different when different colours of light are used to get the refractive index of glass.
As we know, $μ_{B} > μ_{R}$ i.e., the refractive index of blue light is equal to 1.53 whereas the refractive index for red light is equal to 1.51.
This means that due to the difference in speed of light in blue and red colour, the value of the refractive index for glass comes out to be different.

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