Question

What is the nature of the image formed in:

1. Concave lens
2. Convex lens

Also give one use of each lens.

Answer 1

1. A concave lens is a diverging lens that always produces virtual, erect, and diminished images, and the decrease in the size of the image depends on the position of the object.
   - Concave lens are widely used in high-quality cameras and telescopes.
   
2. A Convex lens is a converging lens that can produce both virtual and real images. It depends on the position of the object placed in front of the lens. Virtual images are formed by placing an object near to the convex lens and real images are formed by placing an object far away from the convex lens.
   - Convex lens can form enlarged images and thus it is used in magnifying glass and microscopes.