Eye lens is

Options

A. Convex
B. Concave
C. Biconcave
D. Biconvex

Answer

**Step-by-Step Solution:**

1. **Understanding the Options**: The question asks about the shape of the eye lens. The options provided are:
- Option 1: Bi-concave
- Option 2: Concave
- Option 3: Convex
- Option 4: Bi-convex

2. **Analyzing the Eye Lens**: The eye lens is known for its role in focusing light onto the retina. To understand its shape, we need to recall the basic structure of the lens.

3. **Identifying the Correct Shape**: The eye lens is characterized by having two outwardly curved surfaces. This means that both surfaces of the lens bulge outwards, which is the definition of a bi-convex lens.

4. **Eliminating Incorrect Options**:
- **Bi-concave**: This would mean the lens has two inwardly curved surfaces, which is not the case for the eye lens.
- **Concave**: This implies a single inwardly curved surface, which does not describe the eye lens.
- **Convex**: While this describes one outwardly curved surface, it does not specify that there are two, so it is not the most accurate description.
- **Bi-convex**: This option correctly describes the eye lens as having two convex surfaces.

5. **Conclusion**: The correct answer is that the eye lens is **bi-convex** in shape. This shape is essential for its function in focusing light and forming images on the retina.

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