Answer to Question #164209 in Optics for Gary

Question

A source of sound of frequency 2500Hz is placed in front of a flat wall. If the microphone is moved

from the source directly towards the wall, a series of minimum values in its output is observed at

equally spaced points.

Why does this effect does occur? Calculate the separation of these points if the speed of sound in air

at this temperature is 330ms-1.

Answer 1

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