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Q.

If μr be the relative permeability and εr be the relative permittivity of a medium, then its refractive index is given by:

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a

1μrεr

b

μrεr

c

1μrεr

d

μrεr

answer is C.

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Detailed Solution

Refractive index of a medium, n =cv,  where c=1μ0ε0 and v=1μ0ε0μrεr

∴n=1/μ0ε01/μ0ε0μrεr=μrεr  

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