**Question:**

Two identical electric point dipoles have dipole moments $\overrightarrow{\mathrm{P}_{1}}=\mathrm{Pi}$ and $\overrightarrow{\mathrm{P}_{2}}=-\mathrm{P} \hat{i}$ and are held on the $x$ axis at distance a’ from each other. When released, they move along $x$ axis with the direction of their dipole moments remaining unchanged. If the mass of each dipole is ‘ $\mathrm{m}$ ‘, their speed when they are infinitely far apart is: $\quad$

Correct Option: 2

**Solution:**

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