In the context of an earthquake, which one is deep under the ground :focus or epicentre ?

Options

A. Focus
B. Epicentre
C. Both A and B
D. None of these

Answer

To solve the question of whether the focus or the epicenter is deep under the ground in the context of an earthquake, we can follow these steps:

### Step-by-Step Solution:

1. **Define the Terms**:
- **Focus**: The focus (or hypocenter) is the point within the Earth where an earthquake originates. It is located deep underground.
- **Epicenter**: The epicenter is the point on the Earth's surface that is directly above the focus. It is located on the surface of the Earth.

2. **Understand Their Locations**:
- The focus is located deep beneath the Earth's surface, where the seismic waves are generated.
- The epicenter is directly above the focus on the Earth's surface.

3. **Conclusion**:
- Since the focus is located deep underground and the epicenter is on the surface, the answer to the question is that the **focus** is deep under the ground.

### Final Answer:
The focus is deep under the ground.

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