A magnifying glass comprises a simple

Options

A. convex lens
B. convex mirror
C. concave lens
D. concave mirror

Answer

### Step-by-Step Solution:

1. **Understanding the Magnifying Glass**: A magnifying glass is an optical instrument used to enlarge the appearance of an object. It is commonly used to see small details more clearly.

2. **Identifying the Type of Lens**: The magnifying glass uses a lens to magnify the image. The options provided are:
- Convex lens
- Convex mirror
- Concave lens
- Concave mirror

3. **Function of the Lens**: The primary function of a magnifying glass is to create a larger image of an object. This is typically achieved by using a lens that can bend light rays to produce an enlarged image.

4. **Choosing the Correct Lens**: A convex lens is used in a magnifying glass. When an object is placed close to a convex lens, the light rays diverge after passing through the lens, and the brain interprets these rays as coming from a larger virtual image.

5. **Characteristics of the Image Formed**: The image formed by a convex lens when the object is placed close to it is:
- Virtual (the light rays do not actually converge)
- Erect (the image is upright)
- Magnified (the image appears larger than the actual object)

6. **Conclusion**: Based on the above points, the correct answer to the question is that a **convex lens** is used in a magnifying glass.

### Final Answer:
A magnifying glass comprises a **convex lens**.

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