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A person hears the sound of jet aeroplane after it has passed over his head. The angle of the jet plane with the horizontal when the sound appears to be coming vertically downwards is 60°. If the velocity of sound is v, then the velocity of the jet plane should be
  • a)
    2v
  • b)
    v/√3
  • c)
    √3v
  • d)
    v
Correct answer is option 'B'. Can you explain this answer?
Verified Answer
A person hears the sound of jet aeroplane after it has passed over his...
Distance covered by the sound to reach the person = distance covered by jet x cot 60°
∴ velocity of jet = 
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Most Upvoted Answer
A person hears the sound of jet aeroplane after it has passed over his...
The angle of the jet plane with the horizontal when the sound appears to be coming vertically downwards is 60 degrees.
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A person hears the sound of jet aeroplane after it has passed over his head.The angle of the jet plane with the horizontal when the sound appears to be coming vertically downwards is 60°. If the velocity of sound is v, then the velocity of the jet plane should bea)2vb)v/√3c)√3vd)vCorrect answer is option 'B'. Can you explain this answer?
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