Question

In vibration magnetometer the time period of suspended bar magnet can be reduced by

• A. Moving it towards south pole
• B. Moving it towards north pole
• C. Moving it toward equator
• D. Anyone them

Answer 1

Answer: (C)

Moving it toward equator

Answer 2

As we move towards equator $T = 2 \pi \sqrt { \frac { I } { M B _ { H } } }$ we