The correct option is (c).
Explanation
A magnifying glass, also known as a simple microscope, consists of a single converging lens. It operates on the principle of refraction to create a virtual image that appears larger than the actual object when the object is placed within the focal length of the lens.
Statement-wise Analysis
- Statement 1 is Incorrect. A magnifying glass is actually a convex lens (converging lens), not a concave lens. A concave lens is a diverging lens and always forms a diminished, virtual, and erect image, which would not serve the purpose of magnification.
- Statement 2 is Correct. The primary function of a magnifying glass is to allow the observer to view details of small objects or read very small print by increasing the visual angle subtended by the object at the eye.
- Statement 3 is Correct. When an object is placed between the optical center and the principal focus of a convex lens, the lens forms an image that is virtual, erect, and magnified. This is the specific optical configuration used in a magnifying glass.
Key Takeaway: A magnifying glass utilizes a convex lens with the object placed within its focal length to produce a virtual, erect, and magnified image.