Question

Two bar magnets with magnet moments 2M and M are fasted together at right angles to each other at their centers to from a crossed system sets in each's magnetic field with magnet having magnetic moment 2M an angle $\Theta$ with the magnetic median such that

• A. $\Theta =ta{n}^{-1}\left(\frac{1}{\sqrt{3}}\right)$
• B. $\Theta =ta{n}^{-1}\left(\sqrt{3}\right)$
• C. $\Theta =ta{n}^{-1}\left(\frac{1}{2}\right)$
• D. $\Theta =ta{n}^{-1}\left(\frac{3}{4}\right)$

Answer 1

Answer: (C)

$\Theta =ta{n}^{-1}\left(\frac{1}{2}\right)$

REF.Image.

$Tan\theta =\frac{M}{2M}=\frac{1}{2}$

$\theta =Ta{n}^{-1}\left(\frac{1}{2}\right)$