JEE PHYSICS MCQ: MAGNETISM AND MATTER

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Coercivity and retentivity of soft iron is

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Correct option: C

Low coercivity, low retentivity

Option C (Low coercivity, low retentivity) is correct because soft iron is easily magnetized and demagnetized, meaning it has low coercivity and retentivity.

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Curie temperature is the one above which A vibration magnetometer consists of two identical bar magnets placed one over the other such that they are perpendicular and bisect each other. The time period of oscillation in a horizontal magnetic field is

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\mu_{\mathrm{d}}, \mu_{\mathrm{p}}

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