Question about diagram and rays

[physicsqanda]

Homework Statement

Draw the ray diagrams for a pencil sitting on the principal axis behind and in front of the focal
point of a converging lens. Describe the image. Do the same for a pencil sitting on the parallel
axis behind and in front of the focal point of a diverging lens.

 

[Shinobii]

Have you attempted to do anything? What are you asking? Just do what the problem says! Draw the picture!

 

[physicsqanda]

i don't know how to draw the picture

 

[Shinobii]

Think about what the light will do. There is not much else I can do to explain. Draw the lenses and the ray diagrams without the pencil there, then add a pencil. As for ray diagrams, google it and view some of the images that pop up.

Better yet, just think about it first. I mean, you should get an idea of what will happen.