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Standard X
Physics
Magnification
What is meant...
Question

What is meant by magnification ? Write its expression. What is its sign for the (a) real (b) virtual, image ?


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Solution

m a g n i f i c a t i o n space i s space t h e space r a t i o space o f space t h e space l e n g t h space o f space i m a g e space t o space t h e space l e n g t h space o f space t h e space o b j e c t m equals I over O i t space i s space a l s o space g i v e n space a s m equals negative v over u w h e r e comma u space a n d space v space i s space t h e space o b j e c t space a n d space i m a g e d i s tan c e comma r e s p e c t i e v e l y h e n c e comma w e space h a v e a right parenthesis f o r space r e a l space i m a g e colon u space a n d space v space a r e space minus v e. s o space m space i s space n e g a t i v e b right parenthesis f o r space v i r t u a l space i m a g e colon u space i s space n e g a t i v e space a n d space v space i s space p o s i t i v e space s o space m space i s space p o s i t i v e


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August 2016
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