You are provided with a concave mirror, a convex mirror, a concave lens and a convex lens. To obtain an enlarged image of an object you can use either

Options

A. concave mirror or convex mirror
B. concave mirror or convex lens.
C. concave mirror or concave lens.
D. concave lens or convex lens.

Explanation

To obtain an enlarged image of an object using the provided optical devices, we can analyze the properties of each device:

1. **Understanding the Devices**:
- **Concave Mirror**: A concave mirror can produce an enlarged image when the object is placed between the focal point and the mirror.
- **Convex Mirror**: A convex mirror always produces a diminished (smaller) image, regardless of the object's position.
- **Concave Lens**: A concave lens always produces a diminished image.
- **Convex Lens**: A convex lens can produce an enlarged image when the object is placed between the focal point and the lens.

2. **Identifying Suitable Devices**:
- From the above understanding, we can conclude that:
- The **concave mirror** can produce an enlarged image.
- The **convex lens** can also produce an enlarged image.
- The **convex mirror** and **concave lens** cannot produce an enlarged image.

3. **Conclusion**:
- Therefore, to obtain an enlarged image of an object, you can use either the **concave mirror** or the **convex lens**.

### Final Answer:
You can use either the concave mirror or the convex lens to obtain an enlarged image of an object.