MCQ
Two identical blocks are kept on a frictionless horizontal table connected by a spring of stiffness $K$ and of original length $\ell_0$ A total charge $Q$ is distributed on the block such that maximum elongation of sparing at equilibrium is equal to $x$ value of q is:
- A$2\ell_0\sqrt{4\pi\in_0(\ell_0+\text{x})}$
- B$2\text{x}\sqrt{4\pi\in_0\text{k}(\ell_0+\text{x})}$
- ✓$2(\ell_0+\text{x})\sqrt{4\pi\in_0\text{kx}}$
- D$(\ell_0+\text{x})\sqrt{4\pi\in_0\text{kx}}$