Two loudspeakers L1 and L2 driven by a common oscillator and amplifier
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Two loudspeakers L1 and L2 driven by a common oscillator and amplifier, are arranged as shown. The frequency of the oscillator is gradually increased from zero and the detector at D records a series of maxima and minima. If the speed of sound is 330 ms^−1 then the frequency at which the first maximum is observed is :
15
Sep
Two loudspeakers L1 and L2 driven by a common oscillator and amplifier, are arranged as shown. The frequency of the oscillator is gradually increased from zero and the detector at D records a series of maxima and minima. If the speed of sound is 330 ms^−1 then the frequency at which the first maximum is [...]
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A thin plane membrane separates hydrogen at 7 degree C from hydrogen at 47 degree C ,
both being at the same pressure. If a collimated sound beam travelling from the cooler gas makes an angle of incidence of 30 degree at the membrane ,
the angle of refraction is ,
Two loudspeakers L1 and L2 driven by a common oscillator and amplifier ,