1.

A spherically symmetric charge distribution is characterized by a charge density having the following variation : rho (r )=rho_0 for r lt Rrho (r )=0 for rgeR. Where r is the distance from the centre of the charge distribution and pois a constant. The electric field at an internal point (r

Answer»

`(rho_0)/(in_0) (r/3 -(r^2)/(4R))`
`(rho_0)/( 4 in_0) (r/3 -(r^2)/(4R))`
`(rho_0)/( 3 in_0) (r/3 -(r^2)/(4R))`
`(rho_0)/( 12 in_0) (r/3 -(r^2)/(4R))`

ANSWER :A


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