Q131 / 150 · MHT CET 2019 (Shift 2) · Physics

The magnetic dipole moment of a short magnetic dipole at a distant point along the equator of magnet has a magnitude of ‘X’ in SI units. If the distance between point and the magnet is halved then the magnitude of dipole moment will be

  • A
    2X
  • B
    12X
  • Correct answer
    C
    X
  • D
    18X

Solution

The magnetic dipole moment is the product of either of pole strength and the magnetic length of dipole. Thus, it is independent of the distance of point at which it is measured. So, it remains unchanged, if the distance between point and the magnet halved.

Hence, the correct answer is option: 'C'.

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