Question

At a point $A$ on the earth's surface the angle of dip. $\delta$= +25?. Ata point Bon the earth's surface the angle of dip, $\delta$ = -25?. We can interpret that:

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

Answer 1

The Correct Option is A

To solve this problem, we need to understand the concept of the angle of dip, also known as magnetic dip, which is the angle made by the Earth's magnetic field with the horizontal plane at any point on the Earth's surface.

Explanation of Concepts:

• In the northern hemisphere, the magnetic dip angle is positive. This means the magnetic field lines are inclined 'downwards' towards the Earth.
• In the southern hemisphere, the magnetic dip angle is negative, indicating that the magnetic field lines are inclined 'upwards'.

Applying the Concept:

Given:

• At point A: The angle of dip \delta = +25°
• At point B: The angle of dip \delta = -25°

From the above explanations:

• Since the angle of dip at point A is positive, point A is located in the northern hemisphere.
• Since the angle of dip at point B is negative, point B is located in the southern hemisphere.

Conclusion: Therefore, the correct interpretation is that A is located in the northern hemisphere and B is located in the southern hemisphere.