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The magnetic susceptibility of a paramag...

The magnetic susceptibility of a paramagnetic material at `-73^(@)C "is" 0.0075`, its value at `-173^(@)C` will be

A

0.0045

B

0.003

C

0.015

D

0.0075

Text Solution

Verified by Experts

The correct Answer is:
C
`T_1 = - 73^@ C + 273 =200K , x_1 = 0.0075`
`T_2 = - 173^@ C + 273 = 100 K, x_2 = ?`
From curies law
`x_1T_1 = x_2T_2`
` 0.0075 xx 200 = x_2 (100)`
` x_2 = 0.015`
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