Hello Megha,

Given: Magnetizing field = H = 1200 A/m, susceptibility = χ = 599,  μo = 4π x 10-7 Wb/Am.

To Find: permeability = μ = ?, Magnetic flux per unit area = B = ?

Solution:

μ = μo ( 1 + χ)

∴  μ = 4π x 10-7  ( 1 + 599) =  4 x 3.142 x 10-7 x 600 = 7.536 x 10-4 H/m.

Now μ = B/H

∴ B = μ H =  7.536 x 10-4 x 1200 =  0.904 T

Ans: Permeability is  7.536 x 10-4 H/m and magnetic flux per unit area = 0.904 T

Thanku.