In the given figure the area of the frictionless and movable piston is $1 {\mathrm{m}}^2$ and it is being held in equilibrium by an external force. Now the external force is slowly removed due to that the piston displaces by $\frac{\mathrm{L}}{2}$ where $\mathrm{L}=1 \mathrm{m}$. The natural length of the ideal springs is $\mathrm{L}=1 \mathrm{m}$. Spring constant is given as $\mathrm{K}=100 \mathrm{N} {\mathrm{m}}^{-1}$. The pressure of the gas in the final situation is