A closely wound solenoid of 2000 turns and area of cross-section \[1.5\times {{10}^{-4}}\,{{m}^{2}}\] carries a current of 2.0 A. It suspended through its centre and perpendicular to its length, allowing it to turn in a horizontal plane in a uniform magnetic field \[5\times {{10}^{-2}}\]tesla making an angle of \[30{}^\circ \] with the axis of the solenoid. The torque on the solenoid will be;

• A. \[3\times {{10}^{-2}}N-m\]
• B. \[3\times {{10}^{-3}}N-m\]
• C. \[1.5\times {{10}^{-3}}N-m\]
• D. \[1.5\times {{10}^{-2}}N-m\]