Exam-style question
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How does the aperture size relate to the diffraction limit of a telescope?.
- A.Larger apertures reduce diffraction effects.
- B.Smaller apertures reduce diffraction effects.
- C.Aperture size has no relation to diffraction.
- D.Diffraction only affects radio telescopes.
Model answer
What a good answer should say
- Larger apertures reduce diffraction effects.
Explanation
Why this works
A larger aperture decreases the diffraction limit of a telescope, allowing for better resolution of images. This is because a larger opening allows for a narrower diffraction pattern, which improves the ability to distinguish between closely spaced objects.
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