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Waves question

2003 · Shift 0 · Q165
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Waves question

2003 · Shift 0 · Q165

JEE MainPhysicsWavesMCQ+4 / −1
A tuning fork of known frequency 256Hz256Hz256Hz makes 555 beats per second with the vibrating string of a piano. The beat frequency decreases to 222 beats per second when the tension in the piano string is slightly increased. The frequency of the piano string before increasing the tension was
  1. A
    256+2Hz256 + 2Hz256+2Hz
  2. B
    256−2Hz256 - 2Hz256−2Hz
  3. C
    256−5Hz256 - 5Hz256−5Hz
  4. D
    256+5Hz256 + 5Hz256+5Hz
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