Siti tried to look at a candle through a bent tube as shown in the diagram. She could not see the candle flame. Which property of light does this demonstrate?
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Worked Solution
Step 1: The tube is bent.
Step 2: Light cannot bend around corners on its own.
Step 3: This proves light travels in straight lines.
Step 4: Since the path is blocked by the tube walls, light from the flame cannot reach her eyes.
Correct answer: Light travels in straight lines.
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