A parallel plate condenser with oil between the plates (dielectric constant of oil K = 2 ) has a capacitance C. If the oil is removed, then capacitance of the capacitor becomes ?
(a) \( \sqrt{2C} \)
(b) \( 2C \)
(c) \( \sqrt{\frac{C}{2}} \)
(d) \( \frac{C}{2} \)
Answer : (d) \( \frac{C}{2} \)
\( C = K \cdot C_0 \)
\( C = 2 \cdot C_0 \)
\( \frac{C}{2} = C_0 \)
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