alleryStart learning →Why are big research telescopes mostly reflectors, not refractors?
ALens telescopes top out near 1 metre
BMirrors can see through thick clouds
CLens makers could not find glass
DReflectors never need an eyepiece
Answer & Solution
Correct answer: A. Lens telescopes top out near 1 metre
Refracting telescopes have a maximum size of about 1 metre, so larger research instruments use mirrors.
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