A cylindrical mug is placed between a torch and a screen. Depending on how the mug is positioned, what are the possible shapes of the shadow cast on the screen?
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Worked Solution
Step 1: A cylinder has a circular top/bottom and straight sides.
Step 2: If light shines on the circular face, the shadow is a circle.
Step 3: If light shines on the curved side profile, the shadow is a rectangle.
Correct answer: A circle and a rectangle.
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