Which two rays are used to obtain the image of an object through a convex lens ?

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Dear student
$1) t h e i n c i d e n t r a y p a s \sin g t h r o u g h t h e o p t i c a l c e n t r e p a s s u n d e v i a t e d . 2) t h e i n c i d e n t r a y w h i c h f a l l p a r a l l e l t o t h e p r i n c i p a l a x i s p a s s e s t h r o u g h t h e p o i n t 2 f a f t e r r e f r a c t i o n . R e g a r d s$

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Which two rays are used to obtain the image of an object through a convex lens ?

Dear student 1) the incident ray passing through the optical centre pass undeviated .2) the incident ray which fall parallel to the principal axis passes through the point 2f after refraction.Regards