A parallel plate capacitor with air as medium between the plates has a capacitance of $10\,\mu\text{F}$. The area of capacitor is divided into two equal halves and filled with two media as shown in the figure having dielectric constant $k_1=2$ and $k_2=4$. The capacitance of the system will now be:
.
- A$10\,\mu\text{F}$
- B$20\,\mu\text{F}$
- C$30\,\mu\text{F}$
- D$40\,\mu\text{F}$
✓ Correct answer: C
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