作者colorya2001 (遨遊天空)
站內Physics
標題[問題] 光的反射
時間Wed Nov 19 17:45:37 2008
一束光線射向焦距10cm的小面積凹面鏡的虛焦點,經反射後
與主軸的交會點距鏡_______cm
Anser: 5cm
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