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Q: What is the lowest frequency of sound that can be heard by human beings?
  • A. 50 Hz
  • B. 500 Hz
  • C. 10 Hz
  • D. 20 Hz
Correct Answer: Option D - The vibration of the medium that travels along or parallels to the direction of the wave is called a longitudinal wave. A higher frequency sound has a higher pitch and a lower frequency sound has a lower pitch. The human ear can detect a wide range of frequencies. Frequencies from 20 to 20000 Hz are audible to the human ear the lowest frequency of sound that can be heared by human beings is 20 Hz. Any sound with a frequency below 20 Hz is known as infrasound, and any sound with a frequency above 20000Hz is known as an ultrasound wave.
D. The vibration of the medium that travels along or parallels to the direction of the wave is called a longitudinal wave. A higher frequency sound has a higher pitch and a lower frequency sound has a lower pitch. The human ear can detect a wide range of frequencies. Frequencies from 20 to 20000 Hz are audible to the human ear the lowest frequency of sound that can be heared by human beings is 20 Hz. Any sound with a frequency below 20 Hz is known as infrasound, and any sound with a frequency above 20000Hz is known as an ultrasound wave.

Explanations:

The vibration of the medium that travels along or parallels to the direction of the wave is called a longitudinal wave. A higher frequency sound has a higher pitch and a lower frequency sound has a lower pitch. The human ear can detect a wide range of frequencies. Frequencies from 20 to 20000 Hz are audible to the human ear the lowest frequency of sound that can be heared by human beings is 20 Hz. Any sound with a frequency below 20 Hz is known as infrasound, and any sound with a frequency above 20000Hz is known as an ultrasound wave.