下列關於聲波、水波、光波三種波之敘述，何者正確？ 1.聲波與光波的傳遞速率，在水中皆較空氣中慢 2.水波與光波皆遵守入射角等於反射角之反射定律 3.聲波的波長及頻率皆比光波大 4.聲波與水波的行進方向皆與介質的振動方向垂直，因此其頻率相同
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下列關於聲波、水波、光波三種波之敘述，何者正確？
2012-10-04 6:46 am
回答 (1)
2012-10-04 8:43 pm
✔ 最佳答案
Statement (2) is correct.Statement (1) is wrong.
Light travels slower in water than in air, but sound travels faster in water than in air.
Statement (3) is wrong.
Sound waves are of ferquencies much lower than that of light.
Statement (4) is wrong
Sound wave is a longitudinal wave (縱波), the vibration of the medium (介質) in which sound travels is parallel to the travelling direction of the wave.
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