AP EAMCET Medical 2015 Paper

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Question : 119 of 160
 
Marks: +1, -0
A total charge of 5 pµc is distributed uniformly on the surface of the thin walled semispherical cup. If the electric field strength at the centre of the semisphere is9 x 108 NC1 the radius of the cup is (
1
4π0
=9×109Nm2C2
)
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