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Refractive index mu is given as mu=A+B/l...

Refractive index mu is given as `mu=A+B/lambda^2,` where A and B are constants and lambda is wavelength, then dimensions of B are same as that of

A

wavelength

B

pressure

C

area

D

volume

Text Solution

Verified by Experts

The correct Answer is:
C
Refractive index,
`mu = ("velocity of light in vacuum")/("velocity of light in medium")`
Since `mu` is dimensionless, hence `(B)/(lamda^(2))` is dimensionless.
`therefore ` Dimension of B will have the dimension of `lamda^(2)`.
Hence B has a dimension of area.
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