![Lesson 4 Define the terms principal axis, focal point, focal length and linear magnification as applied to a converging (convex) lens. Define the power. - ppt download Lesson 4 Define the terms principal axis, focal point, focal length and linear magnification as applied to a converging (convex) lens. Define the power. - ppt download](https://images.slideplayer.com/26/8618169/slides/slide_4.jpg)
Lesson 4 Define the terms principal axis, focal point, focal length and linear magnification as applied to a converging (convex) lens. Define the power. - ppt download
![Define the term principal foci of a convex lens and illustrate your answer with the aid of proper diagrams. - India Site Define the term principal foci of a convex lens and illustrate your answer with the aid of proper diagrams. - India Site](https://www.learnatnoon.com/s/in//wp-content/uploads/sites/8/2021/09/oie_10163751spDBYK7u.png)
Define the term principal foci of a convex lens and illustrate your answer with the aid of proper diagrams. - India Site
![The light rays parallel to the principal axis meet at point M after passing through a convex lens. What is the power of the lens? The light rays parallel to the principal axis meet at point M after passing through a convex lens. What is the power of the lens?](https://df0b18phdhzpx.cloudfront.net/ckeditor_assets/pictures/1457665/original_Untitled_%284%29.png)