Question:

If the susceptibility of dia, para and ferro magnetic materials are $\chi_{d} , \chi_{p} , \chi_{f} $ respectively, then

Updated On: Mar 4, 2024
  • $\chi_{d} < \chi_{p} < \chi_{f}$
  • $\chi_{d} < \chi_{f} < \chi_{d}$
  • $\chi_{f} < \chi_{d} < \chi_{p}$
  • $\chi_{f} < \chi_{p} < \chi_{d}$
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The Correct Option is A

Solution and Explanation

$X_d < X_P < X_f$
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Concepts Used:

Magnetism & Matter

Magnets are used in many devices like electric bells, telephones, radio, loudspeakers, motors, fans, screwdrivers, lifting heavy iron loads, super-fast trains, especially in foreign countries, refrigerators, etc.

Magnetite is the world’s first magnet. This is also called a natural magnet.  Though magnets occur naturally, we can also impart magnetic properties to a substance. It would be an artificial magnet in that case.

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Some of the properties of the magnetic field lines are:

  • The lines and continuous and outside the magnet, the field lines originate from the North pole and terminate at the South pole
  • They form closed loops traversing inside the magnet. 
  • But here the lines seem to originate from the South pole and terminate at the North pole to form closed loops.
  • More number of close lines indicate a stronger magnetic field
  • The lines do not intersect each other
  • The tangent drawn at the field line gives the direction of the field at that point.