Standard Science Primary 4 Energy

Why is glass often used for spectacles?

A It is a good conductor of heat.
B It is flexible.
C It is opaque.
D It allows most light to pass through.
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Worked Solution

Step 1: Spectacles need to be seen through. Step 2: Glass is transparent. Step 3: Transparent materials allow most light to pass through for clear vision.

Correct answer: It allows most light to pass through.

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