You are provided with a printed piece of paper. Using this paper how will you differentiate between a convex lens and a concave lens ?

Explanation

To differentiate between a convex lens and a concave lens using a printed piece of paper, follow these steps:

### Step-by-Step Solution:

1. **Gather Materials**: Obtain a printed piece of paper with text on it and two lenses: one convex lens and one concave lens.

2. **Position the Lens**: Take one of the lenses (start with the convex lens) and hold it above the printed piece of paper at a distance of about 10-15 cm.

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