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Does anyone know how to draw the different types of lenses and mirrors? Please let me know!
I made this powerpoint on mirrors and lenses
Hope it helps!
Converging (Convex) lenses converge rays of light towards a focus. The thicker the converging lens the smaller the focal length (distance between lens and focal point will be).
Divergeing (Concave) lenses disperse rays of light. Focuses can be calculated by tracking paralell rays of light backwards. Again this distance will be the focal length.
Also, with mirrors concave mirrors can be used to focus paralell rays of light (because of the angle of reflection off a concave mirror)
Hope that helps :D