A short magnet of magnetic induction fields `B_(1),B_(2),B_(3)` values on this line at points which are at distance 30cm, 60cm and 90cm respectivley from the centre of the magnet isA. `27:3:37:1`B. `37.3:1:27`C. `27:8:3.37`D. `1:2:3`

A short magnet of magnetic induction fields `B_(1),B_(2),B_(3)` values

1.	A short magnet of magnetic induction fields `B_(1),B_(2),B_(3)` values on this line at points which are at distance 30cm, 60cm and 90cm respectivley from the centre of the magnet isA. `27:3:37:1`B. `37.3:1:27`C. `27:8:3.37`D. `1:2:3`
Answer» Correct Answer - A We know that the magnetic field induciton at a point, `" " B=mu_(0)/(4pi)(M)/(r^(3))` According to question `B_(1):B_(2):B_(3)=(1)/(0.3)^(3):(1)/(0.6)^(3):(1)/(0.9)^(3)` 27:3:37:1

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A short magnet of magnetic induction fields `B_(1),B_(2),B_(3)` values on this line at points which are at distance 30cm, 60cm and 90cm respectivley from the centre of the magnet isA. `27:3:37:1`B. `37.3:1:27`C. `27:8:3.37`D. `1:2:3`

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