Question

Correct option is c (need explanation)​

Answer 1

Answer:

A charge Q is placed at the mouth of conical flask.

hence, number of electric lines of force are shared equally in both faces as shown in figure .

which means, charge enclosed inside the Gaussian surface is Q/2.

now by usinfg Gaussian theorem,

electric flux through Gaussian surface is given by ratio of charge enclosed inside the Gaussian surface to the permittivity of medium.

for examplw we have

electric flux through conical flask ,

Explanation:$\phi$=$\frac{Q/2}{\epsilon_0}$=$\frac{Q}{2\epsilon_0}$