A thin bar magnet of length 2 L is bent at the mid-point so that the angle between them is 60^ C . The new length of the magnet is

Step-by-step solution

On bending the magnet, the length of the magnet aligned A C & =A B+B C & =L ( 2 )+L ( 2 ) & =2 L ( 2 )=2 L 30^ & =2 L 1 2 =L aligned