Question

The frequency which is not audible to the human ear is:

• A. $50\text{Hz}$
• B. $500\text{Hz}$
• C. $5000\text{Hz}$
• D. $50\text{kHz}$

Answer 1

The correct option is D $50\text{kHz}$

The audible frequency range for humans lies between $20\text{Hz}$ to $20\text{kHz}$. Hence, a sound of frequency $50\text{kHz}$ will not be audible to the human ear, as it falls outside the range of human audibility.