JEE PYQ: Magnetism And Matter Question 20
Question 20 - 2019 (11 Jan 2019 Shift 2)
A paramagnetic substance in the form of a cube with sides $1$ cm has a magnetic dipole moment of $20 \times 10^{-6}$ J/T when a magnetic intensity of $60 \times 10^3$ A/m is applied. Its magnetic susceptibility is:
(1) $3.3 \times 10^{-2}$
(2) $4.3 \times 10^{-2}$
(3) $2.3 \times 10^{-2}$
(4) $3.3 \times 10^{-4}$
Show Answer
Answer: (4) $3.3 \times 10^{-4}$
Solution
$I = \frac{20 \times 10^{-6}}{10^{-6}} = 20$ A/m, $\chi = \frac{20}{60 \times 10^3} = 3.3 \times 10^{-4}$
BETA
