The capacitor of an oscillatory circuit of frequency 10000 Hz is enclosed in a container. When the container is evacuated, the frequency changes by 50 Hz, the dielectric constant of the gas is
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a
1.1
b
1.01
c
1.001
d
1.0001
answer is B.
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Detailed Solution
Initially C=ε0Ad, ω=1LC. When the medium is dielectric C=Kε0Ad, ω=1KLC