Exam-style question
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What is one advantage of using a reflecting telescope over a refracting telescope?.
- A.Reflecting telescopes do not suffer from chromatic aberration
- B.Reflecting telescopes are always smaller
- C.Reflecting telescopes are easier to manufacture
- D.Reflecting telescopes are less expensive
Model answer
What a good answer should say
- Reflecting telescopes do not suffer from chromatic aberration
Explanation
Why this works
Reflecting telescopes use mirrors, which do not refract light and therefore do not suffer from chromatic aberration, unlike refracting telescopes that use lenses.
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