Question

A ray diagram shows an object placed in front of a concave lens beyond 2F. Which are characteristics of the image that is produced?
a. real and inverted
b. virtual and inverted
c. upright and larger than the object
d. upright and smaller than the object

Answer 1

Answer;

D. Upright and smaller than the object

Explanation;

• A concave lens is thinner at its center than at its edges, and is used to correct short-sightedness. A concave lens always forms a virtual image of an object.
• The image formed by a concave lens cannot be obtained on a screen, since the image is always virtual.
• Concave lens and convex mirror forms virtual but diminished image of the object.
• Concave lenses cause light to spread out thus resulting in a smaller image for the viewer.

Answer 2

For all object in front of a concave lens, the image is:

The image would be erect, virtual, and diminished.

d. upright and smaller than the object