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Q. Keeping dissimilar poles of two magnets of equal pole strength and length same side, their time period will be

Magnetism and Matter

Solution:

$T=2 \pi \sqrt{\frac{I_{1}+I_{2}}{\left(M_{1}-M_{2}\right) B_{H}}}$
Here $M_{1}=M_{2}=M;$
$\therefore T=\infty$