A dip needle vibrates in the vertical plane perpendicular to the magnetic meridian. The time period of vibration is found to be 2 seconds. The same needle is then allowed to vibrate in the horizontal plane and the time period is again found to be 2 seconds. Then the angle of dip is
Text Solution
Verified by ExpertsThe correct answer is:
C
In vertical plane perpendicular to magnetic meridian.
In horizontal plane
Equations (i) and (ii) give 
Hence, by using 
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