The capacity of a parallel plate condenser with air medium is C . If half of the space between the plates is filled with a slab of dielectric constant K as shown in the figure, then the capacity becomes :
A
K2C
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B
2KC
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C
(K+1)C2
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D
(K+1)C
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Solution
The correct option is C(K+1)C2 Capacity of a half parallel plate capacitor with air medium =C2
Capacity of a half parallel plate capacitor with slab of dielectric constant K =KC2