Question

The frequency which is not audible to the human ear is:
A. 50 Hz
B. 500 Hz
C. 5000 Hz
D. 50000 Hz

Answer 1

Hint: Human ear helps us listen to recognise the different types of sound. And due to the anatomical limitations of the human ear, there is also a limitation to the sound that is audible to us, there is a frequency range (20Hz to 20,000Hz). Depending upon the anatomy of their ears different animals have different audible frequency ranges.

Complete step-by-step answer:
Due to the anatomy of human ears, there are certain limitations to the sounds we can hear. And as such, there is a limitation to the frequency range to the sound we can hear. The frequency range a human can detect is from 20 Hz to 20,000 Hz. Although these are the absolute borders of the human frequency hearing range, not all forms of sound falling within these borders can be picked up easily by us. The frequency range we are comfortable with is 2,000 Hz – 5,000 Hz.
Now coming back to our question, the sound that can not be heard by the human ear is 50,000 Hz as it falls beyond the highest end of our frequency range, i.e. 20 Hz to 20,000 Hz.

So, the correct answer is “Option D”.

Note: Along with the limit to the frequency range there is also a limitation to the loudness level a human ear can tolerate. Any sound below 0 dB is not audible to the human ear, while sounds above 80 dB are physically painful and sound above 130 dB can cause permanent hearing damage.