The torque experienced by a magnetic dipole, having dipole moment M, when placed in a uniform magnetic field of intensity B is:

Correct option is D

​$$\text{The torque } \vec{\tau} \text{ on a magnetic dipole placed in a magnetic field is given by the \textbf{vector cross product}:} \\\vec{\tau} = \vec{M} \times \vec{B}\\[10pt]\bullet \text{This torque tries to align the dipole moment } \vec{M} \text{ with the magnetic field } \vec{B}. \\\bullet \text{The \textbf{magnitude} of the torque is:} \\\tau = MB \sin \theta\\[10pt]\text{where } \theta \text{ is the angle between } \vec{M} \text{ and } \vec{B}.$$​​