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At a point 20 cm from the centre of a un...

At a point `20 cm` from the centre of a uniformly charged dielectric sphere of radius `10 cm`, the electric field is `100 V//m`. The electric field at `3 cm` from the centre of the sphere will be

A

150 V/m

B

125 V/m

C

120 V/m

D

Zero

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