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範例:都卜勒效應[81夜大]

一火車速率為空氣中聲速的1/10,在進入山洞以前鳴笛。笛聲頻率為900赫,而靜立於火車後之鐵道旁的人聽到兩次聲音,則第二聲的頻率為(A)810 (B)900 (C)990 (D)1000赫 。【81夜大】


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Posted in 歷屆物理考題, 都卜勒效應.

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By admin – 2009 年 10 月 07 日

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