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NEET 2020

NEET 2020 Physics question on Electrostatics

The capacitance of a parallel plate capacitor with air as medium is 6 F6\,\text{F}. With the introduction of a dielectric medium, the capacitance becomes 30 F30\,\text{F}. The permittivity of the medium is :
(ϵ0=8.85×10−12 C2 N−1 m−2)(\epsilon_0 = 8.85 \times 10^{-12}\,\text{C}^2\,\text{N}^{-1}\,\text{m}^{-2})
  1. A.
    1.77×10−12 C2 N−1 m−21.77 \times 10^{-12}\,\text{C}^2\,\text{N}^{-1}\,\text{m}^{-2}
  2. B.
    0.44×10−10 C2 N−1 m−20.44 \times 10^{-10}\,\text{C}^2\,\text{N}^{-1}\,\text{m}^{-2}
  3. C.
    5.00 C2 N−1 m−25.00\,\text{C}^2\,\text{N}^{-1}\,\text{m}^{-2}
  4. D.
    0.44×10−13 C2 N−1 m−20.44 \times 10^{-13}\,\text{C}^2\,\text{N}^{-1}\,\text{m}^{-2}
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Correct option: B

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