Explain with the help of diagram the terms `(i)` magnetic declination and `(ii)` angle of dip at a given place.

Explanation

(i)magnetic declination`(alpha)`:The angle between the geographic meridian and magnetic meridian at a place is called magnetic declination that place.
(ii)Angle of dip`(delta)`:The angle made by the earth's total magnetic field `(vecB)` with the horizontal is called angle of dip at any place.