Question

name two types of sounds which are not audible to human ear. and state the criterion used for labelling each one of them. ​

Answer 1

Answer:

infrasonic sound

audible & inaudible

Explanation:

So the frequencies below 20 Hz and above 20 kHz comes under the category of inaudible frequencies. The low-frequency sound which the human ear cannot detect is also known as infrasonic sound. Whereas the higher range inaudible frequency is also known as ultrasonic sound.

Answer 2

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The audible frequency range for human ear is from 20Hz to 20,000Hz , as out of the given frequencies , only frequency of 50000Hz doesn't lie in audible range , therefore it cannot be heard by human ear.