JEE Main 09 April 2016 Paper

The potential (in volts) of a charge distribution is given by
V(z)=30−5z2 for |z|≤1m
V(z)=35−10|z| for |z|≥1m
V(z) does not depend on x and y. If this potential is generated by a constant charge per unit volume ρ0 (in units ∊0) which is spread over a certain region, then choose the correct statement.