Speakers driven by the same sound wave of wavelength
Two speakers are driven by the same sound wave of wavelength .50m. if the distances from a point to the speakers differ by 1.0 m, will the waves interface constructively or destructively? Justify your answer.
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A lens with an index of refraction of 1.35 is to be coated with a material (n=1.2) that will make the lens nonreflecting for fed light (wavelength = 650nm) normally incident on the lens. What is the minimum required thickness of the coating?
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