The magnetic induction at p for the arrangement shown in when tow similar short magnets of magnetic moment M are joined at the middle so that they are mutually perpendicualr will be

Options

A. `(m_(0))/(4pi)(msqrt(3))/(d^(3))`
B. `(mu_(0))/(4pi)(2m)/(d^(3))`
C. `(mu_(0)msqrt(5))/(4pid^(3))`
D. `(mu_(0)2m)/(4pid^(3))`

Answer

C

Explanation

In given two magnets are perpendicular to each other
`therefore B=(mu_(0))/(4pir^(3))sqrt(4+1)=(mu_(0)M)/(4pid^(3))sqrt(5)`