For a uniformly charged non conducting solid cylinder of infinite length, which of the following graph shows the variation of E with r ? (distance from axis)

Case 1: Inside the cylinder $(r<R)$

$E=\frac{ρr}{2ε_0}$

[$ρ$ = Charge density]

$⇒ E \propto r $

Case 2: Outside the cylinder $(r>R)$

$E=\frac{ρR^2}{2ε_0r}$

$⇒ E \propto \frac{1}{r} $