A compass needle of oscillation magnetometer oscillates 20 times per minute at a place P of dip 30^(°). The number of oscillations per minute become 10 at another place Q of 60^(°) dip. The ratio of the total magnetic field at the two places (B Q: B P) is:

Magnetic Effects of Current and Magnetism: JEE Main 2022 Physics question

JEE Main 2022 · 27 Jul, Evening shift · Q7629

JEE Main 202227 Jul, Evening shiftPhysicsMediumMagnetic Effects of Current and Magnetism165× since 2002

A compass needle of oscillation magnetometer oscillates 20 times per minute at a place

\mathrm{P}

\operatorname{dip} 30^{\circ}

. The number of oscillations per minute become 10 at another place

\mathrm{Q}

60^{\circ}

dip. The ratio of the total magnetic field at the two places

\left(B_{Q}: B_{P}\right)

is :

JEE Main 2022 Magnetic Effects of Current and Magnetism Question with Solution (27 Jul Evening shift, Q7629) | JEE Arc