JIPMER2015PhysicsMagnetic Properties of Matter
A thin bar magnet of length 2 L is bent at the mid-point so that the angle between them is 60^ . The new length of the magnet is
Options
- AL 2 3
- B3 L 2
- CL
- D2 L 3
Correct answer
C. L
Step-by-step solution
On bending the magnet, the angle between two parts of the magnet is expressed in diagram below Now, the minimum distance between the ends P and R aligned & =L 30^ +L 30^ & =2 L 30^ =2 L 30^ & =2 L 1 2 =L aligned