Whoever solves this correctly gets 100 points.
On Fig. 7.1, draw a ray, passing through a principal focus of the lens, from the tip of the object
to the tip of the image. Label the principal focus F.
[11
(c) Use the ray you have drawn in (b) to determine the focal length of the lens.
focal length =
[1]
(d) Draw another ray, not passing through a principal focus of the lens, that passes from the tip
of the object to the tip of the image.
[1]
[Total:
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