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प्रश्न
Choose the correct option.
A place where the horizontal component of Earth's magnetic field is zero lies at
पर्याय
geographic equator
geomagnetic equator
one of the geographic poles
one of the geomagnetic poles
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उत्तर
A place where the horizontal component of Earth's magnetic field is zero lies at one of the geomagnetic poles.
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संबंधित प्रश्न
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The reduction factor K of a tangent galvanometer is written on the instrument. The manual says that the current is obtained by multiplying this factor to tan θ. The procedure works well at Bhuwaneshwar. Will the procedure work if the instrument is taken to Nepal? If there is same error, can it be corrected by correcting the manual or the instrument will have to be taken back to the factory?
State Tangent Law in magnetism.
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What happens to the angle of dip as we move towards magnetic pole from magnetic equator?
Solve the following problem.
A magnet makes an angle of 45° with the horizontal in a plane making an angle of 30° with the magnetic meridian. Find the true value of the dip angle at the place.
Answer the following question regarding earth’s magnetism:
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In which direction would a compass free to move in the vertical plane point to, if located right on the geomagnetic north or south pole?
Answer the following question regarding earth’s magnetism:
The earth’s field, it is claimed, roughly approximates the field due to a dipole of magnetic moment 8 × 1022 J T−1 located at its centre. Check the order of magnitude of this number in some way.
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Geologists claim that besides the main magnetic N-S poles, there are several local poles on the earth’s surface oriented in different directions. How is such a thing possible at all?
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The earth may have even reversed the direction of its field several times during its history of 4 to 5 billion years. How can geologists know about the earth’s field in such distant past?
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- can be positive or negative.
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