If a musical instrument produces a sound with a frequency of 200 Hz, which of the following frequencies will produce a sound of higher pitch than this instrument?
350 Hz
Pitch is the sensation of how high or low a sound seems, and it is decided by the frequency of the vibrating source. The greater the number of vibrations per second, the higher the pitch we hear.
Here the reference frequency is 200 Hz. A sound of higher pitch therefore needs a frequency greater than 200 Hz.
Among 180 Hz, 120 Hz, 150 Hz and 350 Hz, only 350 Hz is above 200 Hz, so it produces the shriller, higher-pitched sound.
Hence, the frequency giving a higher pitch is 350 Hz.
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