A charge $+q$ is situated at a distance '$d$' away from both the sides of a grounded conducting '$L$' shaped sheet as shown in the figure.

The force acting on the charge $+q$ is

• A

  towards $O$, magnitude $\frac{q^2}{32\pi {\epsilon }_0{d}^2}\left(2\sqrt{2}+1\right)$
• B

  away from $O$, magnitude $\frac{q^2}{32\pi {\epsilon }_0{d}^2}\left(2\sqrt{2}+1\right)$
• Correct answer
  C

  towards $O$, magnitude $\frac{q^2}{32\pi {\epsilon }_0{d}^2}\left(2\sqrt{2}-1\right)$
• D

  away from $O$, magnitude $\frac{q^2}{32\pi {\epsilon }_0{d}^2}\left(2\sqrt{2}-1\right)$

Hence, the correct answer is option: 'C'.