science
Grade6
Easy
Question
Human ear cannot hear __________.
- Ultrasound
- Infrasound
- Audible sound
- Both 1 & 2
Hint:
The human ear can hear audible sounds.
The correct answer is: Both 1 & 2
- The human ear can only hear sound in the frequency range of 20 Hz to 20,000 Hz.
- This is the audible range.
- Above 20,000Hz and below 20Hz is ultrasonic and infrasonic respectively, which are not audible for the human ear.
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