Exam-style question
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What is the primary function of the objective lens in an astronomical telescope?.
- A.To magnify the image of the object being observed
- B.To collect light and form an image
- C.To focus the light onto the eyepiece
- D.To reduce the effects of atmospheric distortion
Model answer
What a good answer should say
- To collect light and form an image
Explanation
Why this works
The objective lens in an astronomical telescope is designed to gather light from distant objects and form a clear image, which is then magnified by the eyepiece lens.
Common mistake
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