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qUESTIONS

In a sonometer wire, the tension is maintained by suspending a 50.7 kg mass from the free end of the wire. The suspended mass has a volume of 0.0075 m³. The fundamental frequency of the wire is 260 Hz. If the suspended mass is completely submerged in water, the fundamental frequency will become (take g = 10 ms²)

A pipe 30 cm long is open at both ends. Which harmonic mode of the pipe is resonantly excited by a 1.1 kHz source? (Take speed of sound in air = 330 ms-1)

An open pipe of length / vibrates in fundamental mode. The pressure variation is maximum at

At 23°C, a pipe open at both ends resonates at a frequency of 450 hertz. At what frequency does the same pipe resonate on a hot day when the speed of sound is 4 present higher than it would be at 23°C

If the length of a closed organ pipe is 1m and velocity of sound is 330 m/s, then the frequency for the second note is

A resonance air column of length 20 cm resonates with a tuning fork of frequency 250 Hz. The speed of sound in air is

A source of sound placed at the open end of a resonance column sends an acoustic wave of pressure amplitude P0 inside the tube. If the atmospheric pressure is PA, then the ratio of maximum and minimum pressure at the closed end of the tube will be

The harmonics which are present in a pipe open at one end are

A source of unknown frequency gives 4 beats/s, when sounded with a source of known frequency 250 Hz, The second harmonic of the source of unknown frequency gives five beats per second, when sounded with a source of frequency 513 Hz, The unknown frequency is

Three sound waves of equal amplitudes have frequencies (n-1), n, (n+1). They superimpose to give beats. The number of beats produced per second will be

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