engineering physics MCQ #5223

In a ferromagnetic material, the Curie temperature is 500 K. At 300 K, the susceptibility is 10^(-3). What is the susceptibility at 400 K?

engineering physics MCQ #5223

  1. Question 1

    Q1. In a ferromagnetic material, the Curie temperature is 500 K. At 300 K, the susceptibility is 10^(-3). What is the susceptibility at 400 K?

    • A) 2 * 10^(-3)
    • B) 5 * 10^(-4)
    • C) 1.25 * 10^(-3)
    • D) 8 * 10^(-4)

    Answer: 1.25 * 10^(-3)

    Explanation: Using Curie's law, χ = C / (T - T_c), and given χ at 300 K, we can find C and then χ at 400 K.