Find the distance of an object from a convex lens if image is
two times magnified. Focal length of the lens is `10cm`

Explanation

To find the distance of an object from a convex lens when the image is two times magnified, we can use the lens formula and the magnification formula. Let's break down the solution step by step.

### Given:
- Focal length of the lens, \( f = 10 \, \text{cm} \)
- Magnification, \( m = \pm 2 \)

### Step 1: Understand the Magnification
Magnification \( m \) is given by the formula:
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