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Q: The frequency which is not audible to the human ear is :
  • A. 18000Hz
  • B. 22000Hz
  • C. 100Hz
  • D. 2000Hz
Correct Answer: Option B - Audible frequency range for human ear is from 20 Hz to 20,000 Hz. Therefore, 22,000 Hz frequency does not lie in audible range. So, it can not be heard by human ear.
B. Audible frequency range for human ear is from 20 Hz to 20,000 Hz. Therefore, 22,000 Hz frequency does not lie in audible range. So, it can not be heard by human ear.

Explanations:

Audible frequency range for human ear is from 20 Hz to 20,000 Hz. Therefore, 22,000 Hz frequency does not lie in audible range. So, it can not be heard by human ear.