Two short bar magnets of length 1 cm each have magnetic moments `1.20Am^2` and `1.00Am^2` respectively they are placed on a horizontal table parallel to each other with their north poles pointing towards south as shown in the figure they have a common magnetic equator and are seprated by a distance of 20.0cm 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 `3.6xx10^(-5)Wb/m^2)`

Options

A. `3.6XX10^(-5)Wb/m^2`
B. `2.56xx10^(-4) Wb/m^2`
C. `3.50xx10^(-4)Wb/m^2`
D. `5.80xx10^(-4)Wb/m^2`

Answer

B