The respective radii of the two spheres of a spherical condenser are $12\;cm$ and $9\;cm$. The dielectric constant of the medium between them is $ 6$. The capacity of the condenser will be
  • A$240\,pF$
  • B$240\,\mu F$
  • C$240\,F$
  • D
    None of the above
Medium
art

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