Question

At a place, the horizontal and vertical intensities of earth's magnetic field is 0.30 Gauss and 0.173 Gauss respectively. The angle of dip at this place is

• A. 30°
• B. 90°
• C. 60°
• D. 45°

Answer 1

Answer: (A)

30°

Answer 2

$\tan \phi = \frac { B _ { V } } { B _ { H } } = \frac { 0.173 } { 0.30 } = \frac { 1.73 } { 3.0 } = \frac { \sqrt { 3 } } { 3 } = \frac { 1 } { \sqrt { 3 } } \Rightarrow \phi = 30 ^ { \circ }$