4 42 A magnetic needle vibrates in the vertical plane perpendicular to the magnetic meridian Its time period is 2 seconds if the

Question

4 42 A magnetic needle vibrates in the vertical plane perpendicular to the magnetic meridian Its time period is 2 seconds if the same needle vibrates in the horizontal plane and the time period is again 2 seconds what is the angle of dip at that place A 30 C 60 B 45 D None of the above

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