Rey set up an experiment to test a property of four materials, P, Q, R and S. He tried to see through each material to read a word on a paper. His results are shown below. Which material is most suitable for making the lenses of a pair of spectacles?
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Worked Solution
Step 1: Identify the property needed for spectacle lenses. They must be transparent so the wearer can see clearly.
Step 2: Material Q allows the word to be seen clearly, meaning it is transparent.
Correct answer: Q
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