Question

The vertical component of the earth's magnetic field is zero at a place where the angle of the dip is :

• A. $0^0$
• B. ${45}^0$
• C. ${60}^0$
• D. ${90}^0$

Answer 1

The correct option is A $0^0$

The angle of dip ($\theta$) is given by the expression:
$tan\theta =\frac{V}{H}$
When the vertical component of Earth's magnetic field is zero, i.e., when $V=0$, from the above expression, we get: $\theta =0$