Calculate the linear magnification of a square of side 2mm, which when projected on a screen, gives an image of a square of side 2cm.

Explanation

To calculate the linear magnification of the given square, we will follow these steps:

### Step 1: Identify the dimensions of the object and the image
- The side of the original square (object) is given as 2 mm.
- The side of the projected square (image) is given as 2 cm.

### Step 2: Convert the dimensions to the same unit
To perform the calculation, we need both dimensions in the same unit. We will convert 2 cm to mm.
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