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Q.

The basic magnetization curve for a ferromagnetic material is shown in figure. Then, the value of relative permeability is highest for the point

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a

P

b

Q

c

R

d

S

answer is B.

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Detailed Solution

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B=μ0μrH⇒μr∝BH= slope B-H curve 

According to the given graph, slope of the graph is highest point Q.

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