357985 Assertion :
When we produce charge \({q_1}\) on a body by rubbing it against another body which gets a charge \({q_2}\) in the process, then \({q_1} + {q_2} = 0\).
Reason :
Charge on an isolated system remains constant.

357986 A solid sphere of radius \({R_1}\) and volume charge density \(\rho = \frac{{{\rho _0}}}{r}\) is enclosed by a hollow sphere of radius \({R_2}\) with negative surface charge density \(\sigma ,\) such that the total charge in the system is zero. \({\rho _0}\) is a positive constant and \(r\) is the distance from the centre of the sphere. The ratio \({R_2}/{R_1}\) is

357985 Assertion :
When we produce charge \({q_1}\) on a body by rubbing it against another body which gets a charge \({q_2}\) in the process, then \({q_1} + {q_2} = 0\).
Reason :
Charge on an isolated system remains constant.

357986 A solid sphere of radius \({R_1}\) and volume charge density \(\rho = \frac{{{\rho _0}}}{r}\) is enclosed by a hollow sphere of radius \({R_2}\) with negative surface charge density \(\sigma ,\) such that the total charge in the system is zero. \({\rho _0}\) is a positive constant and \(r\) is the distance from the centre of the sphere. The ratio \({R_2}/{R_1}\) is