Question

Which of the following statements is true in respect of diamagnetic substances?

• A. Susceptibility decreases with temperature.
• B. Susceptibility is small and negative.
• C. They are feebly attracted by magnets.
• D. Permeability is greater than 1000

Hint:

Diamagnetic materials have a small negative susceptibility, meaning they are weakly repelled by magnetic fields. The negative value of susceptibility decreases with increasing temperature.

Answer 1

The Correct Option is B

Diamagnetic substances have a negative magnetic susceptibility, which means that they are weakly repelled by magnetic fields. The susceptibility of diamagnetic materials is very small, usually negative and very close to zero. - Susceptibility decreases with temperature: This is generally true for paramagnetic materials, but not for diamagnetic substances. - Susceptibility is small and negative: This is the correct statement for diamagnetic materials. - They are feebly attracted by magnets: Diamagnetic substances are weakly repelled by magnetic fields. - Permeability is greater than 1000: This is true for ferromagnetic materials, not diamagnetic materials. Thus, the correct answer is: Susceptibility is small and negative.