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What is the difference between concave and convex lenses?
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In a ray diagram, a concave lens is drawn as a vertical line with inward facing arrows to indicate the shape of the lens. Learn about and revise lenses, images, magnification and absorption ...
Graphs for convex and concave lenses (Real is positive sign convention) Figure 1 shows a graph where the reciprocal of the image distance is plotted against the reciprocal of the object distance. The graph is a straight line that intercepts both axes at 1/f where f is the focal length of the lens.
Sep 9, 2023 · Ways to Remember. Concave: Think “Con-cave”; it has a “cave” or an inward dip. Convex: Think of “Con-vex” as “convicts” trying to escape, bulging outwards. Concave and Convex Lenses. Concave lenses focus light inside the curve of the lens, while convex lenses focus light using the outer curve.
ray diagram. : Draw a ray from the object to the lens that is parallel to the principal axis. Once through the lens, the ray should pass through the principal focus. Draw a ray which passes...
Feb 27, 2024 · In a convex lens, parallel rays of light are brought to a focus. This point is called the principal focus. This lens is sometimes referred to as a converging lens. The distance from the lens to the principal focus is called the focal length. This depends on how curved the lens is.
Figure 16.26 shows a concave lens and the effect it has on rays of light that enter it parallel to its axis (the path taken by ray 2 in the figure is the axis of the lens). The concave lens is a diverging lens because it causes the light rays to bend away (diverge) from its axis.
Lenses Revision. Lenses change images by refracting light. Ray diagrams are used to represent the path of light through lenses and can be used to show how images are formed through a lens. Lenses can be either concave or convex. Convex Lenses. Convex lenses are thicker in the middle than at the edges.
