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CBSE Class 10 Answered

A small object is placed in front of convex lens of 10 cm focal length, such that a virtual image is formed at a distance of 25cm....find it's magnification!!
Asked by shamim.ayanahmad | 26 Dec, 2017, 11:15: PM
answered-by-expert Expert Answer
begin mathsize 20px style v equals space minus 25 space c m f space equals 10 space c m space 1 over 10 equals 1 over u plus fraction numerator 1 over denominator negative 25 end fraction 1 over 10 plus 1 over 25 equals 1 over u u equals space 50 divided by 7 space c m M a g n i f i c a t i o n space equals space fraction numerator negative v over denominator u end fraction equals fraction numerator 25 x 7 over denominator 50 end fraction space equals space 3.5 end style
Answered by Gajendra | 28 Dec, 2017, 10:24: AM

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CBSE 10 - Physics
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