問題詳情
11.在氣溫為 10℃的夜晚，將一塊寬為 12 公尺的黑色金屬平板放置於寬度相同的空屋地板上。到了白天，當氣溫上升至 30℃，此平板因溫度變化而膨脹，若平板一端仍維持在地板上，而另一端卡在牆壁離地面 5 公尺處，如圖（五）所示，則此金屬平板的線膨脹係數為何（1／℃）？ 
(A)1／50
(B)1／120
(C)1／130
(D)1／240
(A)1／50
(B)1／120
(C)1／130
(D)1／240
參考答案
答案：D
難度：困難0.35
統計：A(1),B(6),C(4),D(7),E(0)
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