The magnetic field at a distance d from a short bar magnet in longitudinal and transverse positions are in the ratio.

Options

A. `1:1`
B. `2:3`
C. `2:1`
D. `3:2`

Answer

C

Explanation

For longitudinal positions, magnetic field will be `B_(1) prop (2M)/(d^(3))` .
For transverse positions magnetic field will be `B_(2) prop (M)/(d^(3))` .
`:. (B_(1))/(B_(2))=2:1 `