都卜勒效應小考
Quiz
•
Science
•
9th - 12th Grade
•
Medium
姿穎 賴
Used 3+ times
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6 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
小都站在路邊等公車時,突然有救護車鳴笛疾駛經過。自接近至遠離的過程中小都所聽到聲音的敘述,下列何者正確?
當救護車接近時,可以聽出警笛音調較低
當救護車接近時,可以聽出警笛音調不變但聲音變小
當救護車遠離時,可以聽到警笛音調較低
當救護車遠離時,可以聽出警笛音調不變但聲音變小
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
如圖所示,緊急前往失火處的消防車發出頻率為f的單頻警示聲。此時位於車後的甲聽到的頻率為f甲;位於車前的乙聽到的頻率為f乙;下列何者為其正確的大小關係?
f甲>f乙>f
f乙>f >f甲
f乙>f甲>f
f甲>f >f乙
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
海上靜止的船隻,發出聲波以偵測魚群位置,經過50毫秒測得聲波的回聲訊號,且發現回聲的頻率下降。若當時海中聲波速率為1520公尺/秒,則下列何者為該魚群在反射聲波時,其相對於船隻的距離與運動狀態?(104學測)
相距38公尺,接近中
相距76公尺,接近中
相距38公尺,遠離中
相距76公尺,遠離中
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
下列有關都卜勒效應的敘述,何者正確?(103學測題)
只適用於縱波
只適用於需要靠介質傳播的波動
適用於不同波長的聲波與電磁波
適用於無線電波及可見光,但對於X射線及波長更短之電磁波則不適用
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
如圖所示,在直線MN上,頻率f的哨子。以等速度v(小於當時的聲速)自左向右運動,當哨子自P點等速移動至T點的過程中,觀察者於O點聽到哨子所發出頻率有何變化?
頻率 > f且逐漸增加
頻率 > f且逐漸減少
頻率由 > f逐漸減少到 < f
頻率由 < f逐漸增加到 > f
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
一觀察者觀測比較波源靜止與高速運動時所發出之電磁波的頻率變化,藉以推測波源與觀察者之間的相對運動。已知不同電磁波的頻率由高而低的關係為:紫外線 > 紫光 > 紅光 > 紅外線 > 微波 > 無線電波。考慮電磁波的都卜勒效應,下列推測哪些正確?(應選2項)
(A)(B)
(C)(D)
(B)(E)
(A)(D)
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