A certain digital camera having a lens with focal length 7.50cm focuses on an object 1.90m tall that is 4.70m from the lens.
a) How far must the lens be from the photocells?
b) Is the image on the photocells erect or inverted? Real or virtual?
c) How tall is the image on the photocells?
d) A SLR digital camera often has pixels measuring 8.00 8.00 . How many such pixels does the height of this image cover?