The dipole moment of each molecule of a paramagnetic gas is 1.5×10−23amp×m2. The temperature of a gas is 270C and the number of molecules per unit volume in it is 2×1026m−3. The maximum possible intensity of magnetisation in the gas will be
A
4×10−3amp×m
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B
5×105amp×m
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C
3×103amp×m
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D
6×10−4amp×m
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Solution
The correct option is C3×103amp×m Intensity of magnetisation
Intensity of magnetisation,
I=MV
(M = magnetic moment, V = volume)
Tidal magnetic moment equals to dipole moment of each molecule multiply by mumber of molecules per unit volume