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In two separate experiment the neutral p...

In two separate experiment the neutral point due to two small magnets are at a distance of r and 2r in broad side-on position. The ratio of their magnetic moments will be

A

`4 : 1 `

B

`1 : 2 `

C

`2 : 1 `

D

`1 : 8 `

Text Solution

Verified by Experts

The correct Answer is:
A
`B prop (M)/(r ^(3))`
`implies(M _(1))/(r^(3))=(M_(2))/((2r)^(3))`
`implies (M_(1))/(M_(2))=1/8`
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