Two magnets held together in earth’s magnetic field with same polarity together make 12 ${\rm{vib }} - {\min ^{ - 1}}{\rm{and}}$ when opposite poles together make 4 ${\rm{vib }} - {\min ^{ - 1}}.{\rm{The}}$ ratio of magnetic moments is

NEET UG PHYSICS MCQ: MAGNETISM AND MATTER

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Application +4 | -1

Two magnets held together in earth’s magnetic field with same polarity together make 12

\mathrm{vib } - {\min ^{ - 1}}\mathrm{and}

when opposite poles together make 4

\mathrm{vib } - {\min ^{ - 1}}.\mathrm{The}

ratio of magnetic moments is

View answer and explanation

Correct option: D

10\mathrm{ }:\mathrm{ }8

Option D (

10\mathrm{ }:\mathrm{ }8

) is correct because the frequency of vibration is related to the magnetic moments and the earth's 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