An object shaped L is placed between two parallel plane mirrors. in the first seven closest images how many laterally inverted images are formed

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Solution

$\sin c e t h e m i r r o r a r e p a r a l l e l t h e n o o f i m a g e s f o r m e d a r e i n f i n i t e . t h e f i r s t 7 i m a g e s w e a r e t a l k i n g a b o u t . t h e f i r s t t w o w i l l b e l a t e r a l l y i n v e r t e d . n e x t t w o w i l l b e i n v e r t e d o f l a t e r a l l y i n v e r t e d h e n c e s a m e a s o b j e c t n o t l a t e r a l l y i n v e r t e d . n e x t t w o s h o u l d b e l a t e r a l l y i n v e r t e d . l a s t o n e m u s t b e i n v e r t e d o f l a t e r a l l y i n v e r t e d h e n c e s a m e a s o b j e c t n o t l a t e r a l l y i n v e r t e d . h e n c e 4 i s l a t e r a l l y i n v e r t e d o u t o f 7 R e g a r d s$

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0^{\circ}

Answer the following questions.

(a) How many times is an image in a plane mirror bigger or smaller than the object?

(b) Where is the image formed in a plane mirror located?

(d) How many images are obtained in two parallel mirrors?

(e) Why are the two mirrors in a periscope placed parallel to each other?

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