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A parallel plate condenser has a capacit...

A parallel plate condenser has a capacitance `50 muF` in air and `100 muF` when immersed in an oil. The dielectric constant `k` of the oil is

A

0.45

B

0.55

C

1.1

D

2.2

Text Solution

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The correct Answer is:
D
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MOTION-10 ROTATIONAL-Exercise - 4 (Level - II)
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  8. A solid sphere of mass M, radius R and having moment of inertia about ...

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  13. Two discs A and B are mounted coaxially ona vertical axle. The discs h...

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  14. Two discs A and B are mounted coaxially ona vertical axle. The discs h...

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  15. A small object of uniform density rolls up a curved surface with an in...

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  16. Satement-1: if there is no external torque on a body about its centre ...

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  19. A uniform thin cylindrical disk of mass M and radius R is attaached to...

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  21. If the resultant of all the external forces acting on a system of part...

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