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प्रश्न
A magnetic needle, free to rotate in a vertical plane, orients itself vertically at a certain place on the Earth. What are the values of (i) Horizontal component of Earth’s magnetic field and (ii) angle of dip at this place?
उत्तर
(a) The horizontal component of earth’s magnetic field is 0°.
(b) The angle of dip is 0°.
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