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A cyclinder of radius 4mm and surface de...

A cyclinder of radius 4mm and surface density of charge `0.25 muC//m^(2)` is surrounded by a medium of dielectric constant 6.28. The magnitude of electric field at a point 2 m away from the axis of the cyclinder is

A

9 V/m

B

12 V/m

C

6 V/m

D

4.5 V/m

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The correct Answer is:
A
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