Light – Reflection and Optics PDF
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This document provides ray diagrams to illustrate image formation in convex and concave lenses. The diagrams show how light rays behave when passing through different types of lenses.
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(ii) A ray of light passing through a principal focus, after refraction from a convex lens, will...
(ii) A ray of light passing through a principal focus, after refraction from a convex lens, will emerge parallel to the principal axis. This is shown in Fig. 9.14 (a). A (a) (b) ray of light appearing to meet at the principal Figure 9.14 focus of a concave lens, after refraction, will emerge parallel to the principal axis. This is shown in Fig.9.14 (b). (iii) A ray of light passing through the optical centre of a lens will emerge without any deviation. This is (a) (b) illustrated in Fig.9.15(a) Figure 9.15 and Fig.9.15 (b). The ray diagrams for the image formation in a convex lens for a few positions of the object are shown in Fig. 9.16. The ray diagrams representing the image formation in a concave lens for various positions of the object are shown in Fig. 9.17. 154 Science 2024-25
