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Simple Harmonic Motion question

2009 · Shift 2 · Q47
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Simple Harmonic Motion question

2009 · Shift 2 · Q47

JEE AdvancedPhysicsSimple Harmonic MotionMultiple correct+4 / −2
A student performed the experiment to measure the speed of sound in air using resonance air-column method. Two resonances in the air-column were obtained by lowering the water level. The resonance with the shorter air-column is the first resonance and that with the longer air-column is the second resonance. Then,
  1. A
    the intensity of the sound heard at the first resonance was more than that at the second resonance.
  2. B
    the prongs of the tuning fork were kept in a horizontal plane above the resonance tube.
  3. C
    the amplitude of vibration of the ends of the prongs is typically around 1 cm.
  4. D
    the length of the air-column at the first resonance was somewhat shorter than 1/4th of the wavelength of the sound in air.
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