A short bar magnet produces manetic fields of equal induction at two points one on the axial line and the other on the equatorial line. The ratio of their distance is

Options

A. `2:1`
B. `2^(1//2):1`
C. `2^(1//3):1`
D. `2^(1//4):1`

Answer

C

Explanation

`B_(1)/B_(2)=2(d_(2)/d_(1))^(3)`