Magnetic induction at a point `(r,0^(@))` due to a short magnetic dipole is `B_(1)`.The magnetic induction due to the same dipole at a point`(r,60^(@)

Question

Magnetic induction at a point `(r,0^(@))` due to a short magnetic dipole is `B_(1)`.The magnetic induction due to the same dipole at a point`(r,60^(@)

Magnetic induction at a point `(r,0^(@))` due to a short magnetic dipole is `B_(1)`.The magnetic induction due to the same dipole at a point`(r,60^(@))` is`B_(2)`.The ratio of `B_(1):B_(2)` is
A. `1:1`
B. `sqrt(7):2`
C. `sqrt(7):4`
D. `4:sqrt(7)`

Monjur Alahi

5 views

2025-01-04 04:42

1 Answers

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Salim Ahmed Kawsar · Accepted Answer · 2023-02-05T15:29:48+06:00

Salim Ahmed Kawsar

Correct Answer - D
`(B_(1))/(B_(2))=((mu_(0))/(4pi)(M)/r^(3)sqrt(3cos^(2)theta_(1)+1))/(mu_(0)/(4pi)(M)/(r ^(3))sqrt(3cos^(2)theta_(2)+1))`
`sqrt(3cos^(2)theta+1)/sqrt(3cos^(2)60+1)=(4)/sqrt(7)`

5 views Answered 2023-02-05 15:29