In a laboratory experiment, a student connects a microphone to a cathode-ray oscilloscope (CRO) to study the sound produced by a tuning fork. The time-base control of the CRO is adjusted so that the trace shows 6 complete wave cycles occupying 0.012s along the horizontal time axis. Using this observation, answer the following questions:
(a) Find the time period of the sound wave produced by the tuning fork.
(b) Calculate its frequency.
(c) If the speed of sound in air is taken as 340ms−1, determine the wavelength of the sound wave.
(d) A second tuning fork produces a sound of frequency 256Hz. Which tuning fork produces the sound of higher pitch? Support your answer with appropriate reasoning using the frequencies obtained.