If a magnetic dipole of dipole moment $M$ rotated through an angle ${\rm{\theta }}$ with respect to the direction of the field $H$, then the work done is

$MH\left( {1 - \cos {\rm{\theta }}} \right)$

$MH\left( {1 - \sin {\rm{\theta }}} \right)$

NEET UG PHYSICS MCQ: MAGNETISM AND MATTER

1 Medium

1 of 1

Application +4 | -1

If a magnetic dipole of dipole moment

M

rotated through an angle

\mathrm{\theta }

with respect to the direction of the field

H

, then the work done is

View answer and explanation

Correct option: D

MH\left( {1 - \cos \mathrm{\theta }} \right)

Option D (

MH\left( {1 - \cos \mathrm{\theta }} \right)

) is correct because it represents the work done in rotating a magnetic dipole in a magnetic field.

Practice All Chapter MCQs →

\vec A = 2\vec i - 3\vec j + 6\vec k\,{m^2}

\vec B = - 3\vec i + \vec j + 2\vec k\,\left( {Wb/{m^2}} \right)

250\;joule

10\;kg

50\;Hz

7.5\;gm/c{m^3}

M

B