A person can clearly see objects between 25 cm and 200 cm. Which of the following may represent the range of clear vision for a person B having muscles stronger than A but all other parameters of eye identical to that of A

Options

A. 25 cm to 200 cm
B. 18 cm to 200 cm
C. 25 cm to 300 cm
D. 1 cm to 300 cm

Answer

To solve the problem, we need to analyze the information provided about person A and how the stronger muscles of person B affect their range of clear vision.

### Step-by-Step Solution:

1. **Understanding Person A's Vision Range**:
- Person A can clearly see objects between 25 cm (near point) and 200 cm (far point).
- This means that any object closer than 25 cm or farther than 200 cm will not be seen clearly.

2. **Analyzing the Effect of Stronger Muscles in Person B**:
- The problem states that person B has stronger eye muscles than person A, but all other parameters of the eye remain the same.
- Stronger eye muscles allow person B to accommodate better, meaning they can focus on objects that are closer than 25 cm without straining.

3. **Determining the New Range of Clear Vision for Person B**:
- Since person B can accommodate better, they can see objects that are closer than 25 cm clearly.
- Therefore, the near point for person B will be less than 25 cm.
- However, the far point remains the same at 200 cm since the muscles do not affect the ability to see objects at a distance beyond the far point.

4. **Conclusion**:
- The range of clear vision for person B would thus be less than 25 cm (for the near point) to 200 cm (for the far point).
- Therefore, the range of clear vision for person B can be represented as: **(less than 25 cm, 200 cm)**.

### Final Answer:
The range of clear vision for person B is **(less than 25 cm, 200 cm)**.

---