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Q.

A dielectric is placed in between the two parallel plates of a capacitor as shown in figure, the dielectric constant of the dielectric being K. If the initial capacity is C, then the new capacity will be

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a

(K−1)C

b

KC

c

C(K+1)/2

d

(K+1)C

answer is C.

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Detailed Solution

C1=∈0(A/2)d=C02C2=K∈0A2d=KCo2

∴Ceff=K+12C0

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