Two identical blocks are kept on a frictionless horizontal table connected by a spring of stiffness k and of original length \[{{l}_{0}}.\] A total charge Q is distributed of spring at equilibrium of equal to x. Value of Q is

\[\left( {{\ell }_{0}}+x \right)\sqrt{4\pi {{\varepsilon }_{0}}kx}\]

\[2{{\ell }_{0}}\sqrt{4\pi {{\varepsilon }_{0}}k\left( {{\ell }_{0}}+x \right)}\]

\[2x\sqrt{4\pi {{\varepsilon }_{0}}k\left( {{\ell }_{0}}+x \right)}\]

\[2\left( {{\ell }_{0}}+x \right)\sqrt{4\pi {{\varepsilon }_{0}}kx}\]

Two identical blocks are kept on a frictionless horizontal table conne

1.	Two identical blocks are kept on a frictionless horizontal table connected by a spring of stiffness k and of original length \[{{l}_{0}}.\] A total charge Q is distributed of spring at equilibrium of equal to x. Value of Q is
A.	\[2{{\ell }_{0}}\sqrt{4\pi {{\varepsilon }_{0}}k\left( {{\ell }_{0}}+x \right)}\]
B.	\[2x\sqrt{4\pi {{\varepsilon }_{0}}k\left( {{\ell }_{0}}+x \right)}\]
C.	\[2\left( {{\ell }_{0}}+x \right)\sqrt{4\pi {{\varepsilon }_{0}}kx}\]
D.	\[\left( {{\ell }_{0}}+x \right)\sqrt{4\pi {{\varepsilon }_{0}}kx}\]
Answer» D. \[\left( {{\ell }_{0}}+x \right)\sqrt{4\pi {{\varepsilon }_{0}}kx}\]