question_answer

Angle of dip is \[{{90}^{o}}\] at:

A)  equator        

B)  middle point

C)  poles          

D)  none of these

Correct Answer: C

Solution :

A dip circle is used to measure the angle between the direction of the earths magnetic field and the horizontal at any point of the earths surface. It is 90° at the poles (as shown) and zero at the equator.