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Class-12-science»Physics

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C o n s i d e r i n g r e f l e c t i o n f r o m t h e m i r r o r \frac{1}{u} + \frac{1}{v} = \frac{1}{f} \frac{1}{- 3 f} + \frac{1}{v} = \frac{1}{- f} \frac{1}{v} = \frac{1}{3 f} - \frac{1}{f} \frac{1}{v} = \frac{1 - 3}{3 f} = \frac{- 2}{3 f} v = \frac{- 3 f}{2} l e t d i s \tan c e b e t w e e n t h e m i r r o r i s d d i s \tan c e o f i m a g e f r o m t h e p l a n e m i r r o r i s l = d - \frac{3 f}{2} s o d i s \tan c e o f i m a g e f o r m e d b y t h e p l a n e m i r r o r i s = d - \frac{3 f}{2} b u t t h i s d i s \tan c e i s = 3 f - d s o 3 f - d = d - \frac{3 f}{2} 2 d = 3 f + \frac{3 f}{2} = \frac{9 f}{2} d = \frac{9 f}{4} R e g a r d s

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