A) \[60{}^\circ \]
B) \[30{}^\circ \]
C) \[45{}^\circ \]
D) \[90{}^\circ \]
Correct Answer: A
Solution :
Magnetic dip or magnetic inclination at a place is defined as the angle which the direction of total strength of earths magnetic field makes with a horizontal line in magnetic meridian. It is the angle by which total intensity of earths magnetic field dips or comes up out of the horizontal plane. It is represented by 8. Magnetic dip or magnetic inclination is given by, \[\tan \delta =\frac{{{B}_{V}}}{{{B}_{H}}}\] ...(i) where \[{{B}_{V}}\] and \[{{B}_{H}}\] are vertical and horizontal components of earths magnetic field, respectively. Given, \[{{B}_{H}}=\frac{1}{\sqrt{3}}{{B}_{V}}\] \[\therefore \] \[\frac{{{B}_{V}}}{{{B}_{H}}}=\sqrt{3}\] ??(ii) From Eqs. (i) and (ii), we get \[\tan \delta =\sqrt{3}\] \[\therefore \] \[\delta ={{60}^{o}}\]
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