Question

Given below are two statements:  
Statement I: For diamagnetic substance -1 ≤ X < 0 , where X is the magnetic susceptibility.  
Statement II: Diamagnetic substances when placed in an external magnetic field, tend to move from stronger to weaker part of the field. 
In the light of the above statements, choose the correct answer from the options given below.  

• A. Both Statement I and Statement II are true.
• B. Both Statement I and Statement II are false.
• C. Statement I is correct but Statement II is false.
• D. Statement I is incorrect but Statement II is true.

Answer 1

The Correct Option is A

Statement I is correct: For diamagnetic substances, the magnetic susceptibility \( X \) lies between \( -1 \leq X < 0 \), as diamagnetic substances are repelled by the magnetic field, and their susceptibility is negative. 
Statement II is also correct: Diamagnetic substances move from stronger magnetic fields to weaker magnetic fields due to their negative susceptibility. This is because diamagnetic materials tend to create an opposing magnetic field that repels the external field, thus moving to areas where the magnetic field is weaker.
Therefore, both statements are correct.