Use of Concave Lenses

Maharashtra State Board: Class 10

Key Points: Use of Concave Lenses

Laser devices such as scanners, CD players, and medical equipment use concave lenses to achieve proper focus.
Door peepholes use concave lenses to provide a wider view of the outside through a small opening.
Spectacles for myopia use concave lenses to correct nearsightedness.
Torchlights use concave lenses to spread light from a small bulb over a wide area.
Cameras, telescopes, and microscopes mainly use convex lenses, but may also use concave lenses to improve image quality.