Saved Bookmarks
| 1. |
What is focal point |
|
Answer» It is a point on principal axis where light rays originating from a point on the object converge . It is a point onto which collimated light rays parallel to the axis are focussed. Ok understood .... The point where all rays parallel to principle axis meet ( case of concave ) or appear to meet (case of covex).if known as focal point or focus..... |
|