A microphone is connected to the Y-input of a C.R.O. Three different sounds are made in turn in front of the microphone. Their traces (a), (b) and (c) produced on the screen are shown in figure
(i) Which trace is due to the loudest sound? Give the reason for your answer.
(ii) Which trace is due to the sound with the lowest pitch? Explain your answer.
A microphone is connected to the Y-input of a C.R.O. Three different sounds are made in turn in front of the microphone. Their traces (a), (b) and (c) produced on the screen are shown in figure
(i) Which trace is due to the loudest sound? Give the reason for your answer.
(ii) Which trace is due to the sound with the lowest pitch? Explain your answer.

(i) Because the loudest sound has the highest amplitude, Figure (b) is attributable to it.

(ii) Because frequency is the lowest, figure (a) is due to the sound with the lowest pitch.