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 Rectilinear propagation of light questions and answers

(i) In the space provided below, sketch a labeled diagram to show how pinhole camera forms an image of a vertical object placed in front of the pinhole.
(ii) A building standing 200m from a pinhole camera produces on the screen of the camera an image 2.5cm high 5.0cm behind the pinhole.
Determine the actual height of the building.

 (6m 45s)
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