A dip needle vibrates in a vertical plane perpendicular to

Last updated: 6/30/2023

A dip needle vibrates in a vertical plane perpendicular to the geographical meridian The time period of vibration is found to be 2 second The same needle is then allowed to vibrate in the horizontal plane and the time period is again found to be 2 second If the angle of declination is 60 then the true angle of dip is v 1 tan 1 3 45 1 2 2 tan 2 T 22 timbe tan 2