Physics Electrostatics Potential & Capacitance All Topic Question for Revision Test MCQ (Single Correct)

In a parallel plate capacitor the separation between the plates is 3 mm with air between them. Now a 1 mm thick layer of a material of dielectric constant 2 is introduced between the plates due to which the capacity increases. In order to bring its capacity to the original value the separation between the plates must be made

A
1.5 mm
B
2.5 mm
C
3.5 mm
D
4.5 mm

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The correct answer is:
C

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