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A strain of sound waves is propagated al...

A strain of sound waves is propagated along an organ pipe and gets reflected from an open end . If the displacement amplitude of the waves (incident and reflected) are `0.002 cm` , the frequency is `1000 Hz` and wavelength is `40 cm`. Then , the displacement amplitude of vibration at a point at distance `10 cm` from the open end , inside the pipe is

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