Question

The magnetic susceptibility of a paramagnetic substance at -173 °C is 1.5 x 10-2 then its value at - 73 °C will be

• A. 7.5 x 10-1
• B. 7.5 x 10-2
• C. 7.5 x 10-3
• D. 7.5 x 10-4

Answer 1

Answer: (C)

7.5 x 10-3

Answer 2

: In paramagnetic substance the magnetic susceptibility

Then ,

Here, ,

$\therefore \mathrm { X } _ { 2 } = 1.5 \times 10 ^ { - 2 } \times \frac { 100 } { 200 } = 7.5 \times 10 ^ { - 3 }$