Two springs A and B `(K_A = 2 K_B)` are stretched by same suspended weights then ratio of workdone in stretching is -

Two wires of same material and same diameter have lengths in the ratio 2 : 5. They are stretched by same force. Calculate the ratio of workdone in stretching them.

Two springs A and B (k_A=2k_B) are stretched by applying forces of equal magnitudes at the force ends. If the energy stored in A is E, that in B is

Two springs A and B (k_A=2k_B) are stretched by applying forces of equal magnitudes at the force ends. If the energy stored in A is E, that in B is

Two spreings A and B (k_A=2k_B) ar stretched by applying forces of equa magnitudes at the foru ends. If the energy stored in A is E, that in B is