When the object is at a distance of more than 6 metres, at that time

Options

A. Ciliary muscles are fully contracted
B. Convexity of lens is maximum
C. Eyes are fully relaxed
D. All of these

Answer

**Step-by-Step Solution:**

1. **Understanding the Distance**: The question specifies that the object is at a distance of more than 6 meters. This distance is significant because it indicates that the object is far away.

2. **Identifying the Condition of the Eye**: When an object is located at a distance greater than 6 meters, the eye is in a relaxed state. This means that the eye does not need to exert effort to focus on the object.

3. **Ciliary Muscles and Suspensory Ligaments**: In this relaxed state, the ciliary muscles, which control the shape of the lens, are also relaxed. As a result, the suspensory ligaments that hold the lens in place become fully stretched.

4. **Effect on the Lens**: Due to the relaxation of the ciliary muscles and the stretching of the suspensory ligaments, the lens of the eye becomes flatter. This change in shape allows the eye to focus on distant objects effectively.

5. **Conclusion**: Based on the above points, when the object is at a distance of more than 6 meters, the correct condition of the eye is that it is fully relaxed. Therefore, the correct answer to the question is that the eyes are fully relaxed.

**Final Answer**: The correct option is that the eyes are fully relaxed.

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