Practice question If frequency of a wave is 500 Hz and wavelength is 0.68 m, speed of wave? 680 m/s170 m/s340 m/s500 m/s Answer: C — 340 m/s The correct answer is shown above. Try the full quiz for additional practice. Practice more: AAI JE ATC Practice Questions - AAI Junior Executive (Air Traffic Control) Recruitment Exam Exam →