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The magnetic susceptibility of a paramag...

The magnetic susceptibility of a paramagnetic substance at `-73^@C` is `0*006`. What will be its value at `-173^@C`?

A

`0.0030`

B

`0.0120`

C

`0.0180`

D

`0.0045`

Text Solution

Verified by Experts

The correct Answer is:
B
`chi_(m) prop (1)/(T)`
`rArr (chi_(2))/(chi_(1)) = (T_(1))/(T_(2)) rArr (chi_(2))/(0.0060) = (273- 73)/(273- 173) = (200)/(100)= 2`
`rArr chi_(2) = 2 xx 0.0060 = 0.0120`
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