A dip needle vibrates in the vertical plane perpendicular to the magne – McqOptions

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1.	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
A.	0o
B.	30o
C.	45o
D.	90o
Answer» D. 90o

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