Two springs of force constants `1000N//m` and `2000N//m` are stretched by same force. The ratio of their respective potential enegries is

Two springs of force constant 1000 N/m and 2000 N/m are stretched by same force. The ratio of their respective potential energies is

Two springs of spring constants 1000 N/m and 2000 N/m respectively, are stretched with the same force. The ratio of their potential energies will be

Two springs with spring constants K _(1) = 1500 N// m and m K_(2) = 3000 N//m are stretched by the same force. The ratio of potential energy stored in spring will be