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MHT CET 2021 (21 Sep, Shift 1) · Dielectrics

Dielectrics question from MHT CET 2021 (21 Sep, Shift 1)

Q71MHT CET 2021 · 21 SEP · SHIFT 1Easy

Dielectrics

An air filled parallel plate capacitor has a capacity $2\text{ pF}$ . The sepeartion of the plates is doubled and the interspace between the plates is filled with dielectric material, then the capacity is increased to $6\text{ pF}$ . The dielectric constant of the material is

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Answer: (b)

$C' = \frac{K\varepsilon_0 A}{2d} = \frac{K}{2}C$
$6 = \frac{K}{2} \times 2$
$K = 6$
So the answer is (b) 6.

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