The refractive index `mu` of a medium is found to vary with wavelength – InterviewSolution

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1.	The refractive index `mu` of a medium is found to vary with wavelength `lambda` as `mu = A +(B)/(lambda^2).` What are the dimensions of A and B?
Answer» mu = `("velocity of light in vacuum")/("velocity of light in medium")` `= "dimensionless number" ` A`mu = A +(B)/(lambda^2),therefore`, A must be dimensionless, and `B = mu lambda^2 = [L^2]`

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