A magnetic needle performs oscillations per minute in a horizontal plane

PHYSICS · Subjective · CBSE · Physics · Electricity: Magnetic and Heating Effects · Electricity: Magnetic and Heating Effects

Problem

A magnetic needle performs 2020 oscillations per minute in a horizontal plane. If the angle of dip is 30∘30^\circ, how many oscillations per minute will the needle perform in the vertical north-south plane and in the vertical east-west plane?

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