CUET · PHYSICS · PYQ PAPER 2023
When temperature of a ferromagnetic material is increased by 20%, what is the percentage change in it's magnetic susceptibility?
- A 16.7%
- B 83.3%
- C 1.67%
- D 8.33%
Answer & Solution
Correct Answer
(C) 1.67%
Step-by-step Solution
Detailed explanation
\(T_2 = 1.2 T_1\) \(\frac{\chi_2}{\chi_1} = \frac{T_1}{T_2} = \frac{T_1}{1.2 T_1} = \frac{1}{1.2}\) \(\text{Percentage change} = \frac{\chi_2 - \chi_1}{\chi_1} = \frac{1}{1.2} - 1 = \frac{1 - 1.2}{1.2} = \frac{-0.2}{1.2} \approx -0.167\)…
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