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. (a) Find the time period of the sound wave produced by the tuning fork.
b. (b) Calculate its frequency.
c. (c) If the speed of sound in air is taken as 340ms−1, determine the wavelength of the sound wave.
d. (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.