With the help of a ray diagram obtain the expression for the magnifying power of a simple microscope when the image is formed at least distance of distinct vision.

Explanation

To derive the expression for the magnifying power of a simple microscope when the image is formed at the least distance of distinct vision, we will follow these steps:

### Step-by-Step Solution:

1. **Understanding the Setup**:
- A simple microscope consists of a convex lens. The object is placed between the focal point (F) and the lens. The image formed by the lens is virtual and appears on the same side as the object.

2. **Ray Diagram**:
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