Two bar magnets with magnetic moments $ 2 M $ and $M$ are fastened together at right angles to each other at their centres to form a crossed system, which can rotate freely about a vertical axis through the centre. The crossed system sets in earth’s magnetic field with magnet having magnetic moment $2M $ making and angle $ \theta $ with the magnetic meridian such that
Two bar magnets with magnetic moments $ 2 M $ and $M$ are fastened together at right angles to each other at their centres to form a crossed system, which can rotate freely about a vertical axis through the centre. The crossed system sets in earth’s magnetic field with magnet having magnetic moment $2M $ making and angle $ \theta $ with the magnetic meridian such that
- A
$\theta = {\tan ^{ - 1}}\left( {\frac{1}{{\sqrt 3 }}} \right)$
- B
$\theta = {\tan ^{ - 1}}\left( {\sqrt 3 } \right)$
- C
$\theta = {\tan ^{ - 1}}\left( {\frac{1}{2}} \right)$
- D
$\theta = {\tan ^{ - 1}}\left( {\frac{3}{4}} \right)$
Similar Questions
Force between two unit pole strength placed at a distance of one metre is
Force between two unit pole strength placed at a distance of one metre is
Define pole strength of magnet. and Write the unit of pole strength of magnet
Define pole strength of magnet. and Write the unit of pole strength of magnet
Magnetic lines of force due to a bar magnet do not intersect because
Magnetic lines of force due to a bar magnet do not intersect because
- [AIIMS 2014]
A bar magnet of length $6\,cm$ has a magnetic moment of $4\,J\,T^{-1}$. Find the strength of magnetic field at a distance of $200\,cm$ from the centre of the magnet along its equatorial line.
A bar magnet of length $6\,cm$ has a magnetic moment of $4\,J\,T^{-1}$. Find the strength of magnetic field at a distance of $200\,cm$ from the centre of the magnet along its equatorial line.
- [AIEEE 2012]
The magnetic field due to a short magnet at a point on its axis at distance $X \,cm $ from the middle point of the magnet is $200 $ $Gauss$. The magnetic field at a point on the neutral axis at a distance $ X \,cm$ from the middle of the magnet is.....$Gauss$
The magnetic field due to a short magnet at a point on its axis at distance $X \,cm $ from the middle point of the magnet is $200 $ $Gauss$. The magnetic field at a point on the neutral axis at a distance $ X \,cm$ from the middle of the magnet is.....$Gauss$