an-object-placed-20cm-from-a-con-verving-lens-forms-a-mavnified-clear-image-on-the-screen-when-the-lens-is-moved-20cm-towards-the-screen-a-smaller-clear-image-is-formed-on-the-screen-calculate-the-

Question Number 133281 by aurpeyz last updated on 20/Feb/21

a n o b j e c t p l a c e d 20 c m f r o m a c o n -

v e r v i n g l e n s f o r m s a m a v n i f i e d c l e a r

i m a g e o n t h e s c r e e n . w h e n t h e l e n s

i s m o v e d 20 c m t o w a r d s t h e s c r e e n

a s m a l l e r c l e a r i m a g e i s f o r m e d o n

t h e s c r e e n . c a l c u l a t e t h e f o c a l l e n g t h

o f t h e l e n s