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Magnetism — Physics STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 SciencePhysicsMagnetism1 Mark
Question

At two places A and B using vibration magnetometer, a magnet vibrates in a horizontal plane and its respective periodic time are 2 sec and 3 sec and at these places the earth's horizontal components are HA and HB respectively. Then the ratio between HA  and HB will be

(a) 9 : 4

 (b) 3 : 2

 (c) 4 : 9    

 (d) 2 : 3
✓

Answer

(a) 9 : 4

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