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KCET2015PhysicsAlternating Current

If ( ₀ ) and ( ₀ ) are the permittivity and permeability of free space and ( ) and ( ) are the corresponding quantities for a medium, then refractive index of the medium is

Options

  1. A( ₀ ₀ )
  2. B( ₀ ₀ )
  3. C( 11 )
  4. DInsufficient information

Correct answer

B. ( ₀ ₀ )

Step-by-step solution

Given ₀= permittivity of free space ; ₀= permeabilityof free space, = permittivity of medium; = permeability of medium Refractive index of medium, n= C v (1) We know c= 1 ₀ ₀ v= 1 Therefore, n= ₀ ₀ = ₀ ₀ [ from Eq. (1)]

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