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歡迎您訪問數學考題練習:小明在平面鏡里看到背后墻上電子鐘顯示的時間如圖!

數學考題練習:小明在平面鏡里看到背后墻上電子鐘顯示的時間如圖

更新時間:2024-01-12 16:44:34作者:貝語網校

小明在平面鏡里看到背后墻上電子鐘顯示的時間如圖所示,此刻的實際時間應該是________.

試題答案

21:05

試題解析

根據鏡面對稱的性質求解,在平面鏡中的像與現實中的事物恰好左右或上下順序顛倒,且關于鏡面對稱.

解答:根據鏡面對稱的性質,題中所顯示的時刻與21:05成軸對稱,所以此時實際時刻為21:05.故答案為21:05.

點評:本題考查鏡面反射的原理與性質.解決此類題應認真觀察,注意技巧.

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