The frequency range of audible sound for a normal human ear is
A20 Hz to 20000 Hz
B5 Hz to 50 Hz only
C200 Hz to 2000 Hz only
D0 Hz to 10 Hz only
Answer & Solution
Correct answer: A. 20 Hz to 20000 Hz
1. The chapter section on classes of sound gives the audible range.
2. Humans can hear from 20 Hz at the bass end to 20 kHz at the treble end.
3. Below 20 Hz is infrasonic; above 20 kHz is ultrasonic.
4. So option A is correct.
_Source: Selina Concise Physics Class 9, Ch 8 Sound (Mistral OCR'd PDF), section on audible range_
Related questions
In which of the following media does sound travel the fastest?Sound travels fastest through which of the following media?An observer is 660 m away from a thundercloud. The sound of thunder reaches him after (V =A sound wave has wavelength 0.66 m in air where speed of sound is 330 m/s. Its frequency iThe wavelength of a sound wave of frequency 660 Hz travelling at 330 m/s isUltrasonic waves are used in industry toUltrasonic waves are used in medicine forA bat emits ultrasonic pulses at 50 kHz to navigate. This method is called