NEET Questions Solved

A vibration magnetometer consists of two identical bar magnets placed one over the other such that they are perpendicular and bisect each other. The time period of oscillation in a horizontal magnetic field is 254 seconds. One of the magnets is removed and if the other magnet oscillates in the same field, then the time period in seconds is

(a) 214                          (b) 212 

(c) 2                              (d) 234

Initially magnetic moment of system M1=M2+M2=2M

and the moment of inertia I1=I+I=2I

Finally when one of the magnet is removed then  


Difficulty Level:

  • 17%
  • 21%
  • 21%
  • 43%