Question

A bar magnet of length l and magnetic moment M is bent in the form of an arc as shown in figure. The new magnetic dipole moment will be-

(a) M

(b) \(\frac{π}{3}\) M 

(c) \(\frac{2}{π}\)M 

(d) \(\frac{1}{2}\) M

Answer 1

Correct answer is (b) \(\frac{π}{3}\) M