Question

6) Draw a neat ray diagram for a concave lens of focal length 3 cm and object is placed at 4.5
cm from the lens. Mention two uses of concave lens.​

Answer 1

Answer:

1. Concave lenses are used in making spectacles for people who cannot see distant objects clearly.

2. Concave lenses are used in galilean telescope.

Step-by-step explanation:

A concave lens is thinner in the middle and thicker at the edges.

It is a diverging lens.

The image formed is always virtual, erect and small than the size of the object.