Asseration: A metal piece and a non-metal (stone) piece are dropped from the same height near earth's surface. Both will reach the earth's surface simultaneousely.
Reason: There is no effect of earth's magnetic field on freely falling body.

Options

A. If both Assertion `&` Reason are True `&` the Reason is a correct explanation of the Assertion.
B. If both Assertion `&` Reason are True but Reason is not a correct explanation of the Assertion.
C. If Assertion is True but the Reason is False.
D. If both Assertion `&` Reason are False.

Answer

To solve the assertion and reason question, we need to analyze both the assertion and the reason provided.

**Assertion**: A metal piece and a non-metal (stone) piece are dropped from the same height near the Earth's surface. Both will reach the Earth's surface simultaneously.

**Reason**: There is no effect of Earth's magnetic field on a freely falling body.

### Step-by-step Solution:

1. **Understanding Free Fall**:
When objects are in free fall, they are only influenced by the force of gravity (assuming air resistance is negligible). This means that all objects, regardless of their mass or composition, will fall at the same rate when dropped from the same height.

**Hint**: Recall the principle of free fall and the effect of gravity on different masses.

2. **Analyzing the Assertion**:
Since both the metal piece and the stone piece are dropped from the same height and are in free fall, they will experience the same gravitational acceleration (approximately 9.81 m/s² near the Earth's surface). Therefore, they will reach the ground at the same time.

**Hint**: Consider how gravitational acceleration acts equally on all objects in free fall.

3. **Analyzing the Reason**:
The reason states that there is no effect of Earth's magnetic field on freely falling bodies. This is true because the magnetic field does not exert a force on non-magnetic materials in a way that would affect their fall. The primary force acting on the falling objects is gravity.

**Hint**: Think about the forces acting on the objects and how they relate to their motion.

4. **Conclusion**:
Since both the assertion and the reason are true, and the reason correctly explains why the assertion is true, we conclude that the statement is valid.

**Hint**: Ensure you understand the relationship between the assertion and the reason to determine their validity.

### Final Answer:
Both the assertion and the reason are true, and the reason provides a correct explanation for the assertion.