Two short magnet having magnetic moment in the ratio `27:8`, when placed on the opposite sides of a deflection magnetometer, produce no deflection. If the distance of the weaker magnet is `0.12m` from the centre of deflection magnetometer, the distance of the stronger magnet from the centre is

Options

A. `0.06 m`
B. `0.08 m`
C. `0.12 m`
D. `0.18 m`

Answer

D

Explanation

`M_(1)/M_(2)=(d_(1)/d_(2))^(3) implies27/8=(d_(1)/0.12)^(3)`
`implies 3/2=d_(1)/0.12 implies 0.18m`