Question

Define the following:                                                                                                                                                                                                                           (3)

  (b) What type of image is always formed by a concave lens?​

Answer 1

Answer:

A convex lens can form real and inverted image. When the object is placed very close to the lens, the image formed is virtual, erect and magnified. When used to see objects magnified, the convex lens is called a magnifying glass. A concave lens always forms erect, virtual and smaller image than the object.

Answer 2

Answer:

virtual images

"Convex (converging) lenses can form either real or virtual images (cases 1 and 2, respectively), whereas concave (diverging) lenses can form only virtual images (always case 3). Real images are always inverted, but they can be either larger or smaller than the object.'