Respected sir .. the solution given here is not right.
We have to find the equivalent capacitance one with water and then with air then using the energy formula we will evaluate the potential energy ...after that we will find the force by taking the derivative of potential energy and equate it to pgh to find the height.
Please check my solution .and correct me if I'm not doing it correctly with due respect..... Tathagat.
Ps the answer generated by my solution does not match the answer generated by the solution above .
8 years ago
by
Tathagat saxena