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Standard XII

Physics

Earth's Magnetism

A magnet osci...

Question

A magnet oscillating in a horizontal plane has a time period of 2 seconds at a place where the angle of dip is $30^{o}$ and 3 seconds at another place where the angle of dip is $60^{o}$ . The ratio of resultant magnetic fields at the two places is:

\frac{9}{\sqrt{3}}

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\frac{9}{4 \sqrt{3}}

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\frac{4}{9 \sqrt{3}}

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\frac{4 \sqrt{3}}{7}

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Solution

The correct option is B $\frac{9}{4 \sqrt{3}}$
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A magnet oscillating in a horizontal plane has a time period of 2 seconds at a place where the angle of dip is 30o and 3 seconds at another place where the angle of dip is 60o. The ratio of resultant magnetic fields at the two places is:

The correct option is B 94√3undefined

A magnet oscillating in a horizontal plane has a time period of 2 seconds at a place where the angle of dip is $30^{o}$ and 3 seconds at another place where the angle of dip is $60^{o}$ . The ratio of resultant magnetic fields at the two places is:

The correct option is B $\frac{9}{4 \sqrt{3}}$
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