Two thin lenses, both of 10 cm focal length- one convex and other concave, are placed 5 cm apart. An object is placed 20 cm in front of the convex lens. Find the nature and position of the final image.

Explanation

To solve the problem of finding the nature and position of the final image formed by two thin lenses (one convex and one concave) placed 5 cm apart, we will follow these steps:

### Step 1: Identify the parameters of the lenses
- **Convex Lens (Lens 1)**:
- Focal length (f1) = +10 cm (positive for convex lens)

- **Concave Lens (Lens 2)**:
- Focal length (f2) = -10 cm (negative for concave lens)
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