Curie’s Law and Paramagnetism – Rankers Physics

Magnetic Properties of Matter: Practice Problem & Solution

Assertion (A): The product of magnetic susceptibility and absolute temperature of a paramagnetic substance is a constant. Reason (R): Paramagnetic substances obey Curie's law.  
Both (A) & (R) are true and the (R) is the correct explanation of the (A)
Both (A) & (R) are true but the (R) is not the correct explanation of the (A)
(A) is true but (R) is false
Both (A) and (R) are false

Short Solution (Best for NEET):

To solve this problem, we apply the core principles of Magnetic Properties of Matter. Understanding the underlying formula is key to arriving at the correct answer below:

Curie's law states that for paramagnetic substances, magnetic susceptibility (chi) is inversely proportional to absolute temperature (T), i.e., (chi = C/T). This implies (chi T = C), a constant. So Reason (R) directly explains Assertion (A).

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