guitar string is vibrating at its fundamental frequency Which of the following is not true? (a) Each small section of the guitar string oscillates up and down at frequency f. (b) The wavelength of the standing wave On the guitar string λ = v/f where v is the velocity of the wave on the string: (c) A sound wave created by this vibrating string propagates through the air with frequency f (d) A sound wave created by this vibrating string propagates through the air with wavelength v/f where v is the velocity of sound in air: (e) The wavelength of the standing wave On the guitar string is λ = 2L where L is the length of the string: