Two short magnets of magnetic moment $1000 {\mathrm{Am}}^2$ areplaced as shown at the corners of a square of side l0 cm.The net magnetic induction at P is

Point P lies on equatorial line of magnet (1) and axial line of magnet (2) as shown

${\mathrm{B}}_1=\frac{{\mathrm{\mu }}_0}{4\mathrm{\pi }}.\frac{\mathrm{M}}{{\mathrm{d}}^3}={10}^{-7} \mathrm{x} \frac{1000}{{\left(0.1\right)}^3}=0.1 \mathrm{T}$

${\mathrm{B}}_2=\frac{{\mathrm{\mu }}_0}{4\mathrm{\pi }}.\frac{2\mathrm{M}}{{\mathrm{d}}^3}={10}^{-7} \mathrm{x} \frac{2 \mathrm{x} 1000}{{\left(0.1\right)}^3}=0.2 \mathrm{T}$

$\therefore {\mathrm{B}}_{\mathrm{net}}={\mathrm{B}}_2-{\mathrm{B}}_1=0.1 \mathrm{T}$