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範例:電磁波的傳遞[100學測]

當地球距離火星約為6×107公里時，精神號探測車將火星表面影像利用無線電波傳回地球，則地球上的科學家須等待多久後才能收到訊號？

(A)2分鐘        (B)20分鐘      (C)2秒    (D)20秒  (E)200秒

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Posted in 光與電磁波, 歷屆學測(推甄)考題.

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By 張慶堂 – 2015 年 01 月 17 日

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