Question

What is (a) the position, and (b) the size, of the image of a 7.60cm-high object placed 1.00 m from a +50.0-mm-focal-length camera lens?

Answer 1

a)

$f=\frac{dF}{d-F}=\frac{1\cdot 0.05}{1-0.05}=52.6~mm,$

b)

$h=H \frac fd=76\cdot \frac{0.0526}{1}=4~mm.$