An object of length 2.0 cm is placed perpendicular to the principal axis of a convex lens of focal length 12 cm. Find the size of the image of the object is at a distance of 8.0 cm from the lens.

Explanation

To solve the problem of finding the size of the image formed by a convex lens, we will follow these steps:

### Step 1: Identify Given Values
- Object length (height, \( h_o \)) = 2.0 cm (positive, as it is above the principal axis)
- Focal length of the lens (\( f \)) = +12 cm (positive for a convex lens)
- Object distance (\( u \)) = -8.0 cm (negative, as per sign convention, since the object is on the same side as the incoming light)

### Step 2: Use the Lens Formula
...