Q:a telescope is formed by an objective lens of focal length 50cm and an eyepiece of focal length 10 cm .the telescope is in normal adjustment.
1. calculate the distance of the eye-ring from the eyepiece.
THX!!
normal adjustment of telescope
2008-01-04 8:07 pm
回答 (1)
2008-01-05 5:50 pm
✔ 最佳答案
For a telescope, the focus of the objective and the eyepiece must be coincidence, that means at the same point. Therefore the separation between them:50+10 = 60cm
so that is is at normal adjustment
收錄日期: 2021-04-23 21:30:10
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https://hk.answers.yahoo.com/question/index?qid=20080104000051KK00806