Siti placed an object between a torch and a screen. She observed a sharp shadow on the screen. Which of the following materials is the object most likely made of?
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Worked Solution
Step 1: A sharp shadow is formed when light is completely blocked.
Step 2: Opaque materials block all light.
Step 3: Cardboard is opaque, while the others are transparent or translucent.
Correct answer: Cardboard
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