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9) Figure shows two small identical magnetic dipoles a and b of magnetice moments M each, placed at a sepration 2d, with their axis perpendicular to each other. The magnetice at the point P mid way between the dipoles each.

$1)\frac{2{\mu}_{0}M}{4{\mathrm{\pi d}}^{3}}\phantom{\rule{0ex}{0ex}}2)\frac{{\mathrm{\mu}}_{0}\mathrm{M}}{4{\mathrm{\pi d}}^{3}}\phantom{\rule{0ex}{0ex}}3)\mathrm{Zero}\phantom{\rule{0ex}{0ex}}4)\frac{\sqrt{5}{\mathrm{\mu}}_{0}\mathrm{M}}{4{\mathrm{\pi d}}^{3}}$

The solution provided by vidhi is correct and you can have another option as given below.

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