Exam-style question
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What is the relationship between telescope aperture and the amount of light collected?.
- A.Directly proportional.
- B.Inversely proportional.
- C.No relationship.
- D.Only applicable to refracting telescopes.
Model answer
What a good answer should say
- Directly proportional.
Explanation
Why this works
The amount of light collected by a telescope is directly proportional to the square of the aperture diameter. As the aperture increases, the collecting area increases, allowing more light to enter the telescope.
Common mistake
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