CBSE 2025 · Region 4 · Set 2 · Q1 · 1 mark

An electric dipole of dipole moment $\displaystyle 1.0 \times 10^{-12} \mathrm{Cm}$ lies along x -axis. An electric field of magnitude $\displaystyle 2.0 \times 10^{4} \mathrm{NC}^{-1}$ is switched on at an instant in the region. The unit vector along the electric field is $\displaystyle \frac{\sqrt{3}}{2} \hat{\mathrm{i}}+\frac{1}{2} \hat{\mathrm{j}}$. The magnitude of the torque acting on the dipole at that instant is :

CBSE Class 12 Physics past-paper question from the 2025board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.