質問: question a resonance tube is old and has jagged end. it is still used in the laboratory to determine velocity of sound in air. a tuning fork of frequency 512 hz produces first resonance when the tube is filled with water to a mark 11 cm below a reference mark, near the open end of the tube. the experiment is repeated with another fork of frequency 256 hz which produces first resonance when water reaches a mark 27 cm below the reference mark. the velocity of sound in air, obtained in the experiment, is close to : option 1) 328 ms-1 option 2) 341 ms-1 option 3) 322 ms-1 option 4) 335 ms-1
回答: 300