Page 38 - cbse-class-10-light-reflection-and-refraction
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Uses of concave lens

                     It is used to correct myopia in spectacles.


                     It  is  used  in  conjunction  with  a  convex  lens  to  correct  flaws  such  as
                       chromatic  and  spherical  aberration  (the  failure  of  rays  to  converge  at  one
                       focus because of a defect in a lens or mirror).




               Sign Convention for Lenses

               For measuring various distances, the following sign convention is used:




































               Class X Science                                 www.vedantu.com                                                          38
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