A point charge \( q\) is placed symmetrically at a distance \( d\) from two perpendicularly grounded conducting infinite plates as shown in the figure. The net force on the charge ( in units of \( 1/(4\pi\epsilon_0)\) is

1.   \( \dfrac{q^2}{8d^2}(2\surd 2-1) \) away from the corner
2.   \( \dfrac{q^2}{8d^2}(2\surd 2-1) \) towards from the corner
3.   \( \dfrac{q^2}{2\surd 2 d^2}\) towards the corner
4.   \(  \dfrac{q^2}{2\surd 2 d^2}\) away from the corner

(CSIR December 2013}  }