JEE Main 2013 — Magnetic Properties Of Matter Question with Solution

Two short bar magnets of length $$1$$ $$cm$$ each have magnetic moments $$1.20$$ $$A{m}^2$$ and $$1.00$$ $$A{m}^2$$ respectively. They are placed on a horizontal table parallel to each other with their $$N$$ poles pointing towards the South. They have a common magnetic equator and are separated by a distance of $$20.0$$ $$cm.$$ The value of the resultant horizontal magnetic induction at the mid-point $$O$$ of the line joining their centres is close to $$($$ Horizontal component of earth's magnetic induction is $$3.6\times 10.5Wb/m^2)$$