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Q.

A parallel plate condenser has a capacitance $50 μF$ in air and $110 μF$ when immersed in an oil. The dielectric constant ‘k’ of the oil is

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a

0.45

b

1.10

c

0.55

d

2.20

answer is D.

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Detailed Solution

$C_{medium} = {KC}_{air} \Rightarrow K = \frac{C_{medium}}{C_{air}} = \frac{110}{50} = 2 .20$

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