Question

At a point A on the earth's surface the angle of dip, \(\delta=+25°\). At a point B on the earth's surface the angle of dip, \(\delta=-25°\). We can interpret that: 

• A. A and B are both located in the northern hemisphere.
• B. A is located in the southern hemisphere and Bis located in the northern hemisphere.
• C. A is located in the northern hemisphere and Bis located in the southern hemisphere.
• D. A and B are both located in the southern hemisphere.

Answer 1

The Correct Option is C

To solve this question, we need to understand the concept of the angle of dip or magnetic inclination, represented by (\delta).

The angle of dip is the angle made with the horizontal by the earth's magnetic field lines. Depending on the hemisphere, the angle of dip varies:

• In the northern hemisphere, the magnetic field lines dip towards the earth, resulting in a positive angle of dip.
• In the southern hemisphere, the magnetic field lines incline away from the earth, leading to a negative angle of dip.

Given:
- Point A has an angle of dip \(\delta=+25°\).
- Point B has an angle of dip \(\delta=-25°\).

Interpretation:

• The positive angle at point A indicates that it is in the northern hemisphere.
• The negative angle at point B indicates that it is in the southern hemisphere.

Conclusion: The correct answer is:

A is located in the northern hemisphere and B is located in the southern hemisphere.