Question

The susceptibility of magnesium at 200 K is 1.8 x 10^-5. At what temperature will the susceptibility decrease by 6 x 10^-6?

Answer 1

Given,

T = 200K,

χ₁ = 1.8 × 10⁻⁵

χ₁ - χ₂ = 6 × 10^-6

To Find: Required temperature (T₂)

Formula: χT=constatnt

Calculation :

χ₁ - χ₂ = 6 × 10^-6

χ₂ = 1.8×10^-5 - 0.6×10^-5

χ₂ = 1.2 ×10^-5

From formula,

 ∴χT = constant

χ₁T₁ = χ₂T₂

`T_2 =(chi_1T_1)/chi_2`

`T_2=(1.8xx10^-5xx200)/(1.2xx10^-5)`

`T_2 = 300K `

The required temperature is 300 K.