SATHEE: Magnetics 5 Question 3

Magnetics 5 Question 3

3. A paramagnetic material has $10^{28}$ atoms $/ m^{3}$ . Its magnetic susceptibility at temperature $350 K$ is $2.8 \times 10^{- 4}$ . Its susceptibility at $300 K$ is

(2019 Main, 12 Jan II)

(a) $3.726 \times 10^{- 4}$

(b) $3.672 \times 10^{- 4}$

(d) $3.267 \times 10^{- 4}$

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Answer:

Correct Answer: 3. (d)

Solution:

From Curie’s law for paramagnetic substance, we have

Magnetic susceptiblity $χ \propto \frac{1}{T}$

$\begin{array}{ll} ∴ & \frac{χ_{2}}{χ_{1}} = \frac{T_{1}}{T_{2}} \Rightarrow χ_{2} = \frac{χ_{1} \cdot T_{1}}{T_{2}} \\ \Rightarrow & χ_{2} = \frac{2.8 \times 10^{- 4} \times 350}{300} = 3.267 \times 10^{- 4} \end{array}$

Magnetics 5 Question 3

3. A paramagnetic material has $10^{28}$ atoms $/ m^{3}$ . Its magnetic susceptibility at temperature $350 K$ is $2.8 \times 10^{- 4}$ . Its susceptibility at $300 K$ is

Answer:

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Magnetics 5 Question 3

3. A paramagnetic material has 1028 atoms /m3. Its magnetic susceptibility at temperature 350K is 2.8×10−4. Its susceptibility at 300K is

Answer:

Engineering Preparation

Medical Preparation

NCERT Books & Solutions

Important Resources

Other Resources

Syllabus

Test Platform

Sample Mock Test

Mentorship

NCERT Exercise Video Solution

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3. A paramagnetic material has $10^{28}$ atoms $/ m^{3}$ . Its magnetic susceptibility at temperature $350 K$ is $2.8 \times 10^{- 4}$ . Its susceptibility at $300 K$ is