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If mu0 be the permeability and k0 , the ...

If `mu_0` be the permeability and `k_0` , the dielectric constant of a medium, its refractive index is given by

A

`(1)/( sqrt( mu_0 K_0))`

B

`(1)/( mu_(0) K_(0)) `

C

`sqrt( mu_(0) K_(0) )`

D

`mu_(0) K_(0)`

Text Solution

Verified by Experts

The correct Answer is:
C
Refractive index of medium is:
`mu = (c )/( v) "where", c = (1)/( sqrt( mu_(0) k_(0) ) `
and `v = (1)/( sqrt( mu_(0) k_(0) mu_(r ) k_(r) ) `
`therefore mu = (1 // sqrt( mu_(0) k_(0) ))/( 1 sqrt( mu _(0) k_(0) ) ) = sqrt( mu_1 k_1)`
Given `mu_(0) mu_(0) and k_(0) = k_(0)` then
`mu = sqrt( mu_(0) k_(0 ) )`
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