1.

Let rho(r) = Q/(pi R^4) r be the charge density 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

Answer»

`(Qr_1^2)/(3 PI epsilon_0 R^4)`
`(Q)/(4 pi epsilon_0 r_1^2)`
`Q/(4PI epsilon_0 R^4)`
0

Answer :C


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