| Direction: Q.26 to Q.30 |
| The Earth's magnetic field at a point on its surface is usually characterised by three quantities: (a) declination (b) inclination or dip and (c) horizontal component of the field. These are known as the elements of the Earth's magnetic field. At a place, angle between geographic meridian and magnetic meridian is defined as magnetic declination, whereas angle made by the Earth's magnetic field with the horizontal in magnetic meridian is known as magnetic dip. |
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| Read the above passage carefully and give the answer of the following questions: |
A) zero
B) \[\pi /3\]
C) \[\pi /2\]
D) \[\pi /6\]
Correct Answer: B
Solution :
(b) \[\pi /3\] \[\tan \theta =\frac{{{B}_{V}}}{{{B}_{H}}}and\,\,{{B}_{H}}=\frac{{{B}_{V}}}{\sqrt{3}}\] \[\therefore \tan \theta =\sqrt{3}i.e.\,\theta =\frac{\pi }{3}\]
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