Italiaans Triviaal overschreden define focal length of a lens Ontslag nemen Ongedaan maken Doe een poging
A divergent lens has a focal length of 30 cm. At what distance should an object of height 5 cm from the optical centre of the lens be placed so that its
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What is Focal Length in Photography? - Focal Length Explained
Focal Length of a Lens
O3) Camera Lens fundamentals - Scientific Imaging, Inc.