Which of the following pitches should a ringtone be if the cell phone owner does not want adults over 70 years of age to be likely to hear it?
A) 8,000 cycles per second
B) 8,000 nanometers
C) 17,000 cycles per second
D) 800 nanometers

Question

Quizplus · Accepted Answer

As humans age, their ability to hear high-frequency sounds decreases. Adults over 70 years of age generally have difficulty hearing sounds that are higher than 14,000-16,000 cycles per second. Therefore, a ringtone with a frequency of 17,000 cycles per second is unlikely to be heard by most adults over 70 years of age. Answer choice A is too low in frequency, while answer choices B and D refer to nanometers, which is a measure of length and not sound frequency.

Which of the Following Pitches Should a Ringtone Be If