Sound WavesHardBloom L1
Question
Two waves with similar frequencies are added. The resulting waveform oscillates with the average frequency and with an oscillating amplitude that changes with a frequency equal to the difference between the original frequencies. These oscillations in the amplitude are known as beats. The traces show the resulting waveforms that occur when two different pairs of waves are added. Graph is for the same time interval in both cases, which of the following statements is TRUE?
Options
A.On average, the waves on the left had higher frequencies, but the difference between frequencies less
B.On average, the waves on the right had higher frequencies, but the difference between frequencies less
C.On average, the waves on the left had higher frequencies, but the difference between frequencies more
D.On average, the waves on the right had higher frequencies, but the difference between frequencies more
Solution
Sol. For the wave on right, the narrower peaks are closely spaced which denotes high frequency. And Broader peaks are widely speed which denotes low beat frequency, therefore less difference in frequencies.
Create a free account to view solution
View Solution FreeMore Sound Waves Questions
A waveform : y1 = A sin is superposed with a second waveform, to produce a standingwave with a node at x = 0. The equati...A person speaking normally produces a sound intensity of 40 db at a distance of 1 m. If the threshold intesity for reaso...A closed organ pipe and an open organ pipe have their first overtones identical in frequency. Their length are in the ra...Two spring of force constant k and 2k are connected to a mass as shown below : The frequency of oscillation of the mass ...Sounds from two identical sources S1 and S2 reach a point P. When the sounds reach directly, and in the same phase, the ...