Exam-style question
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How does the design of a reflecting telescope help in reducing weight compared to a refracting telescope?.
- A.Reflecting telescopes use lighter materials
- B.Mirrors can be supported from behind
- C.Reflecting telescopes have smaller apertures
- D.Refracting telescopes require more glass
Model answer
What a good answer should say
- Mirrors can be supported from behind
Explanation
Why this works
Reflecting telescopes use mirrors that can be supported from behind, allowing for larger apertures without the weight issues associated with large lenses in refracting telescopes.
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