At a place of latitude `5^@`, angle of dip is nearly

Angle of dip at a place = theta , if the angle of dip in a vertical plane making angle delta with the magnetic meridian be theta' , show that , tantheta':tan theta=secdelta:1

At a place the true value of angle of dip is 60^(@) . If dip circle is rotated by phi^(@) from magnetic meridian, the angle of dip is found to be tan^(-1)(2) . Then the value of phi is

At a place the true value of angle of dip is 60^(@) . If dip circle is rotated by phi^(@) from magnetic meridian, the angle of dip is found to be tan^(-1)(2) . Then the value of phi is

A magnet oscillating in a horizontal plane has a time period of 2 seconds at a place where the angle of dip is 30^(@) and 3 seconds at another place where the angle of dip is 60^(@) . The retio of resultant magnetic field at the two places is

A magnet oscillating in a horizontal plane has a time period of 2 seconds at a place where the angle of dip is 30^(@) and 3 seconds at another place where the angle of dip is 60^(@) . The retio of resultant magnetic field at the two places is

The ratio of the horizontal component to the resultant magnetic field of the earth at a given place is 0.5 What is the angle of dip at that place.

For a place, the true value of angle of dip is 30^@ . Find the apparent dip angle when the plane of dip circle is rotated through 45^@ from the magnetic meridian.

What is the name of place whre angle of dip is 0^@ and 90^@ ?