Question

Magnetic susceptibility of platinum is 0.0001. it's relative permeability is

Answer 1

Magnetic suspectibility is the dimensionless quantity which indicates the degree of magnetization of a material in applied magnetic field .
Relation between relative permeability( $\mu_k$ and magnetic suspectibility χ is given by $\mu_k$ = 1 + χ

Here magnetic suspectibility if platinum is 0.0001
So, relative permeability = 1 + 0.0001 = 1.0001