Question

A charge $q$ is surrounded by a closed surface consisting of an inverted cone of height $h$ and base radius $R$, and a hemisphere of radius $R$ as shown in the figure The electric flux through the conical surface is $\frac{n q}{6 \epsilon_0}$ (in SI units) The value of $n$ is ______

Answer 1

$φ$** ** through cone = $\frac{q}{2\epsilon_0}$
$∴ n = 3$