May 2021 1 59 Report
凹面鏡的問題2題

1. 把一件高5cm的物件放在焦距為12cm的凹面鏡前8cm,求像的放大率。

2. 把一件高5cm的物件放在焦距為12cm的凹面鏡前8cm,而此鏡後6cm有一焦距為10cm的凹面鏡,求物經兩鏡後所成像的放大率。

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