Problem 17: Two small loudspeakers, L1 and L2, are oscillating in phase at a frequencyof 516 Hz, sending out soundwave crests and troughs in synchrony. The speakers are spaced4.1 m apart. The speed of sound propagation in air is 344 m/s.If you move a small microphone, M, slowly, along a straight line from L1 to L2, you willdectect maxima and minima of sound intensity, i.e., in the loudness of the sound. Howsuch maxima and minima will you find between L1 and L2?manyl2 – l1, where lz is the distance from L2 toHints: Consider the pathlength difference, AlM and and li is the distance from L1 to M. (1) What is the range of Al-values covered asM is moved from Lị to L2? In other words: What is the initial value of Al when M startsfrom L1? What is the final value of Al when M arrives at L2? (2) An intensity maximumoccurs whenever Al reaches the values Al0, ±1A, ±2),(3) An intensity minimum....occurs when Al+}1, ±}A,....(A) 6 maxima, 5 minima(B) 6 maxima, 7 minima(C) 15 maxima, 14 minima(D) 13 maxima, 14 minima(E) 13 maxima, 12 minima

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Answered: Problem 17: Two small loudspeakers, L1…

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