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At which distance along the centre axis ...

At which distance along the centre axis of a uniformaly charged plastic disc of radius R is the magnitude of the electric field equal to one-half the magnitude of the field at the centre of the surface of the disc ?

A

`(R)/(sqrt2)`

B

`(R)/(sqrt3)`

C

`sqrt2R`

D

`sqrt(3R)`

Text Solution

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The correct Answer is:
B
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