Two different type of lenses are placed on a sheet of newspaper. How will you identify them without touching?

Explanation

To identify two different types of lenses (convex and concave) placed on a sheet of newspaper without touching them, follow these steps:

### Step 1: Observe the Letters
Look at the letters on the newspaper through each lens one at a time.

### Step 2: Identify the Image Characteristics
- **Convex Lens**: If the letters appear larger or magnified, then the lens you are looking through is a convex lens.
- **Concave Lens**: If the letters appear smaller or shortened, then the lens you are looking through is a concave lens.
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