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Let P(r) = (Q)/(pi R^(4)) r be the charg...

Let `P(r) = (Q)/(pi R^(4)) r` be the charge desntiy distribution for a solid sphere of radius R and total charge Q. for a point 'p' inside the sphere at distance `r_(1)` from the centre of the sphere, the magnitude of electric field is

A

`(Q)/(4piin_(0)r_(1)^(2))`

B

`(Q_(1)^(2))/(4piin_(0)R^(4))`

C

`(Q_(1)^(2))/(3piin_(0)R_(4))`

D

0

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The correct Answer is:
B
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