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Q.

The magnetic susceptibility of a material of a rod is 599, permeability of vacuum is  4π×10−7 henry/m. Absolute permeability of the material of the rod in henry per meter is

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a

π×10−4

b

24π×10−5

c

3π×10−4

d

4π×10−4

answer is B.

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Detailed Solution

Magnetic Susceptibility, χ=μr−1where μr is relative permeability (μ/μ0) ⇒χ=μμ0−1Given : χ=599  ⇒599=μμ0−1⇒μμ0=600;  μ0=4π×10−7 ⇒μ=24π×10−5 henry/meter
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