Q 1256891774.     A spherical metal shell `A` of radius ` R_A` and a solid metal sphere `B` of radius `R_B (< R_A)` are kept far apart and each is given charge ` +Q. `Now they are connected by a thin metal wire. Then

JEE 1993

(This question may have multiple correct answers)

A Field inside shell `A = 0`
B σ_A/σ_B = R_B/R_A`
C Field on surface of `A < ` Field on surface of `B`
D Q_A > Q_B`

HINT

`1.)`Inside a conducting shell electric field is always zero (unless there is a charge placed inside it). `2.)`When the metal sphere are connected, their potentials become equal,

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