Given, diameter of the column tube, d=6 cm=6×10−2 m Frequency of tuning fork, f=504 Hz Speed of sound at given temperature, v=336 m/s As, this is a closed organ pipe. Let L be the length of tube and λ be the wavelength, then
andL+e=4λ​=4fv​(∵λ=fv​)e=0.6×2d​=106​×26×10−2​=0.018⇒L+e=4fv​=4×504336​⇒L=2016336​−0.018=0.1667−0.018=0.1487 m=14.87 cm≈14.8 cm
