Question

The angles of dip at the poles and the equator respectively are :

• A. ${30}^0,{60}^0$
• B. ${90}^0,0^0$
• C. ${30}^0,{90}^0$
• D. $0^0,0^0$

Answer 1

Answer: (B)

${90}^0,0^0$

At poles $B_H=0$
angle of dip at pole $\varphi =$ ${90}^0$

At magnetic equator $B_V=0$
therefore, angle of dip which is given by
$\tan \varphi =B_V/B_H=0$
$\varphi =0$