A bar magnet of length ‘ 
’ and magnetic dipole moment ‘ 
’ is bent in the form of an arc as shown in figure. The new magnetic dipole moment will be
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
D
Let 
be strength of each pole of bar magnet oflength 
. Then
(i)
When the bar magnet is bent in the form of an arc as shown in figure. Then
Here arc length 
So,
Or 
New magnetic dipole moment
(Using (i))
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