Final answer:
C. The Electric Guitar is not typically found in a symphony orchestra, unlike the violin, cello, and trumpet, which are standard. Instrument size and the length of the resonating air column influence the pitch of the notes produced, with smaller instruments playing higher frequencies and larger ones playing lower frequencies.
Step-by-step explanation:
The instrument that is not typically found in a symphony orchestra is Electric Guitar. A symphony orchestra commonly includes a variety of instruments such as strings, woodwinds, brass, and percussion. The violin and cello are string instruments, and the trumpet is a brass instrument, all of which are standard in an orchestra. The electric guitar, on the other hand, is associated more with modern bands and is not usually a part of the traditional orchestral ensemble.
Within an orchestra, tuning is essential before a performance as it allows all the instruments to match pitch, ensuring a harmonious sound. Instruments like the flute and piccolo usually play higher frequency notes due to their smaller size, while larger instruments such as tubas produce lower-pitched sounds owing to their longer air column. The pitch produced by an instrument is related to the length of its resonating air column, with longer instruments generally producing lower frequencies.