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(D) $1$. Inside a metallic conductor,the electric field is always zero. This means that electric field lines cannot exist within the material of the s

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(D) $1$. Inside a metallic conductor,the electric field is always zero. This means that electric field lines cannot exist within the material of the shell.$2$. When a point charge $q$ is placed inside the cavity of a metallic shell,it induces a charge of $-q$ on the inner surface of the shell and a charge of $+q$ on the outer surface.$3$. The electric field lines originating from the point charge $q$ must terminate perpendicularly on the inner surface of the shell.$4$. The electric field lines originating from the outer surface of the shell must be directed radially outward,as if they were originating from a point charge at the center.$5$. Diagram $D$ correctly shows the field lines terminating perpendicularly on the inner surface and originating radially from the outer surface,while maintaining zero field inside the metal.

$A$ metallic shell has a point charge $q$ kept inside its cavity. Which one of the following diagrams correctly represents the electric field lines?

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