Two springs $P$ and $Q$ of force constants $k_P$ and $k_Q(k_Q=\frac{k_P}{2})$ are stretched by applying forces of equal magnitude. If the energy stored in $Q$ is $E$, then the energy stored in $P$ is

Q. Two springs $P$ and $Q$ of force constants $k_P$ and $k_Q(k_Q=\frac{k_P}{2})$ are stretched by applying forces of equal magnitude. If the energy stored in $Q$ is $E$, then the energy stored in $P$ is

Q.

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

Q. Two springs A and B(k_A = 2k_B) are stretched by applying forces of equal magnitudes a the four ends. If the energy stored in A is E, that in B is_A
(a) E/2
(b) 2E
(c) E
(d) E/4

Q. Two springs A and B having spring constants $k_A$ and $k_B(k_A=4k_B)$ are stretched by applying force of equal magnitude. If energy stored in spring A is $E_A$, then energy stored in B will be:

Q. Two springs $A$ and $B$ are stretched by applying forces of equal magnitudes. If the energy stored in $A$ is E, then the energy stored in B will be-
(Given relation between spring constants of $A$ and $B$ is $(k_A=2k_B)$)