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Waves question

2018 · 15 Apr · Shift 1 · Q60
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Waves question

2018 · 15 Apr · Shift 1 · Q60

JEE MainPhysicsWavesMCQ+4 / −1
A tuning fork vibrates with frequency 256Hz256Hz256Hz and gives one beat per second with the third normal mode of vibration of an open pipe. What is the length of the pipe ? (Speed of sound in air is 340 ms−1340\,m{s^{ - 1}}340ms−1)
  1. A
    220cm220cm220cm
  2. B
    190cm190cm190cm
  3. C
    180cm180cm180cm
  4. D
    200cm200cm200cm
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