Sara placed four different sheets, W, X, Y, and Z, over a torch as shown in the setup. She measured the amount of light that passed through each sheet. Which sheet is most suitable for making a bathroom window that allows light in but provides privacy?
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Worked Solution
Step 1: A bathroom window needs to be translucent (allows some light but cannot be seen through clearly).
Step 2: W is opaque (0 lux). Z is likely transparent (500 lux). X allows some light (50 lux).
Step 3: X is the best balance for light and privacy.
Correct answer: Sheet X (50 lux)
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