Two short magnetic dipoles $m_1$ and $m_2$ each having magnetic moment of $1 \mathrm{Am}^2$ are placed at point $O$ and $P$ respectively. The distance between OP is 1 meter. The torque experienced by the magnetic dipole $\mathrm{m}_2$ due to the presence of $\mathrm{m}_1$ is $\ldots \ldots \times 10^{-7} \mathrm{Nm}$.