Notifications
Clear all
Light Reflection and Refraction
1
Posts
2
Users
0
Likes
224
Views
0
16/08/2021 12:41 pm
Topic starter
(a) Explain with the help of a diagram, why the concave lens is also called a diverging lens.
(b) Define the principal focus of a concave lens.
1 Answer
0
16/08/2021 12:46 pm
(a) A concave lens is known as diverging lens because it diverges the parallel rays of light passing through it.
(b) The principal focus of a concave lens is a point on its principal axis from which light rays, originally parallel to the axis, appear to diverge after passing through the lens.