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+2 votes
in Physics by (25 points)
edited by plz answer the question in image as soon as possible

Two identically charged pith balls are suspended from the same point by two massless identical threads density of each ball is ρ. If system is immersed in a medium of density σ, balls remain undeflected, then the dielectric constant of medium is

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1 Answer

+1 vote
by (28.5k points)

If the balls are suspended in a medium of density σ and the distance between the balls remains same, then the dielectric constant of the medium is given by:

So The dielectric constant of the medium(K) = ρ/(ρ-σ)

So the option 1 is correct

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