Consider the following statements about magnetic properties: (I) The magnetisation \( M \) of a material is defined as its dipole moment per unit volume. (II) Magnetic intensity \( H \) has the same dimensions as magnetisation \( M \). (III) The relative magnetic permeability \( \mu_r \) is the analog of the dielectric constant in electrostatics. (IV) Magnetic monopoles can be isolated by cutting a bar magnet into two halves. How many of the above statements are correct?

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Correct answer · Option C

Only three

Statements (I), (II), and (III) are correct. Statement (IV) is false because magnetic poles cannot be isolated.