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Electrostatics — Physics STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 SciencePhysicsElectrostatics1 Mark
MCQ
A parallel plate capacitor has capacitance C. If it is equally filled with parallel layers of materials of dielectric constants $\mathrm{K}_1$ and $\mathrm{K}_2$ its capacity becomes $C_1$. The ratio of $C_1$ to $C$ is
  • A
    $K_1+K_2$
  • B
    $\frac{K_1+K_2}{K_1-K_2}$
  • C
    $\frac{K_1+K_2}{K_1K_2}$
  • ✓
    $\frac{2K_1K_2}{K_1+K_2}$
✓

Answer

Correct option: D.
$\frac{2K_1K_2}{K_1+K_2}$
(d) $\frac{2K_1K_2}{K_1+K_2}$

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