Question

The angle of dip at a place horizontal and vertical components of earth's magnetic field are equal, is :

• A. ${90}^0$
• B. ${30}^0$
• C. ${45}^0$
• D. $0^0$

Answer 1

The correct option is C ${45}^0$

$\text{Let}\theta \text{the angle of dip}.$

$\tan \theta =\frac{B_V}{B_H}$

$\text{But}{B}_H=B_V$

$\Rightarrow \tan \theta =1$

$\Rightarrow \theta ={45}^0$