Assertion : `X` - rays can penetrate through the flesh but not through the bones.
Reason : The penetrating power of `X` - rays depends on voltage.

Options

A. If both assertion and reason are ture and reason is the correct explanation of assertion
B. If both assertion and reason are true but reason is not the correct explanation of assertion
C. If assertion is true but reason is false
D. If both assertion and reson are false.

Explanation

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

### Step-by-Step Solution:

1. **Understanding the Assertion**:
- The assertion states that "X-rays can penetrate through the flesh but not through the bones."
- This is true because X-rays have a certain level of energy that allows them to pass through soft tissues (like flesh) but not through denser materials (like bones). Bones have a higher atomic number and density compared to flesh, which leads to greater absorption of X-rays.

2. **Understanding the Reason**:
- The reason states that "The penetrating power of X-rays depends on voltage."
- This is also true. The penetrating power of X-rays is indeed influenced by the voltage applied in the X-ray tube. Higher voltage results in higher energy X-rays, which can penetrate materials more effectively.

3. **Analyzing the Relationship**:
- While both the assertion and the reason are true, the reason does not provide a direct explanation for the assertion. The assertion is about the difference in penetration between flesh and bones, while the reason discusses how voltage affects the energy of X-rays in general.

4. **Conclusion**:
- Therefore, the correct option is that both the assertion and the reason are true, but the reason is not the correct explanation of the assertion.

### Final Answer:
- Both assertion and reason are true, but the reason is not the correct explanation for the assertion.

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