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A sound wave with 40cm wavelength enters the tube shown below at the source end. Find the smallest radius r such that a minimum intensity is heard at the detector end.3. A sound wave with 40cm wavelength enters the tube shown below at the source end. Find the smallest radius r such that a minimum intensity is heard at the detector end. Source end Debector end

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Soluion Let w o to tu basics nst. ㈧e know mot、fo he given 킴, a tube.. Gnsisting ef a strage olds ラ 2 ラ 2CTT-2) 二4s 2(3. Thoaks !

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