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A source and an observer are moving towards each other with a speed equal to υ/2, where υ is the speed of sound. Thesource is emitting sound of frequency n.The frequency heard by one observer will be
  • a)
    Zero
  • b)
     n
  • c)
     n/3
  • d)
    3n
Correct answer is option 'D'. Can you explain this answer?
Most Upvoted Answer
A source and an observer are movingtowards each other with a speed equ...
Frequency heard by observer n'=(v+velocity of obse
rver/v-velocity of source) n, n'=(v+v/2/v-v/2)n, so n'=3n.
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A source and an observer are movingtowards each other with a speed equal toυ/2, where υ is the speed of sound. Thesource is emitting sound of frequencyn.The frequency heard by one observer will bea)Zerob)nc)n/3d)3nCorrect answer is option 'D'. Can you explain this answer?
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