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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 -- ※ 發信站: 批踢踢實業坊(ptt.cc) ◆ From: 218.162.150.40
colorya2001:I don't know how to solve? 11/19 17:48
ATPS4869:is this your homework? 11/19 22:43
MOONRAKER:smells like homework. 11/19 22:56