A paramagnetic sample has susceptibility 3 10 -3 at 300 K. By Curie's law, at 150 K its susceptibility becomes:

⚛️ Physics · Magnetism and Matter · NEET & JEE

A paramagnetic sample has susceptibility 3 × 10-3 at 300 K. By Curie's law, at 150 K its susceptibility becomes:

Answer: 6 10 -3.

A 1.5 × 10-3
B 3 × 10-3
C 6 × 10-3
D 9 × 10-3

Correct answer: C. 6 × 10-3

Explanation: Curie's law: χ is inversely proportional to T. Halving T from 300 K to 150 K doubles χ to 6 × 10-3.

Magnetic field lines of a bar magnet, emerging from the north pole and curving round to enter the south pole outside the magnet

Magnetic field of a bar magnet: field lines emerge from the north pole and re-enter at the south pole outside the magnet, forming continuous closed loops. Image: Geek3, CC BY-SA 3.0, via Wikimedia Commons.

Concept context

Bar magnets, Earth's magnetism, and how different materials respond to an external magnetic field - diamagnetic, paramagnetic, and ferromagnetic behaviour.

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A paramagnetic sample has susceptibility 3 &times; 10<sup>-3</sup> at 300 K. By Curie's law, at 150 K its susceptibility becomes:

Concept context

More Magnetism and Matter questions

A paramagnetic sample has susceptibility 3 × 10<sup>-3</sup> at 300 K. By Curie's law, at 150 K its susceptibility becomes: