Magnetic Effects of Current and Magnetism: JEE Main 2019 Physics question

JEE Main 2019 · 12 Apr, Morning shift · Q7621

JEE Main 201912 Apr, Morning shiftPhysicsMediumMagnetic Effects of Current and Magnetism165× since 2002

A magnetic compass needle oscillates 30 times per minute at a place where the dip is 45^o, and 40 times per minute where the dip is 30^o. If B₁ and B₂ are respectively the total magnetic field due to the earth at the two places, then the ratio

{{{B_1}} \over {{B_2}}}

is best given by :

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JEE Main 2019 Magnetic Effects of Current and Magnetism Question with Solution (12 Apr Morning shift, Q7621) | JEE Arc