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Q.

Which of the following frequencies is audible to human beings?


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a

5 Hz

b

27 kHz

c

5 kHz

d

50 kHz 

answer is C.

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Detailed Solution

5 kHz is audible to human beings.
Humans have an audible range of around 20 Hz to 20000 Hz, but this varies from person to person and with age.
Normal human ears can hear sound frequencies ranging from 20 Hz to 20000 Hz. However, infrasonic sound has a frequency of less than 20 Hz.
Ultrasound is defined as sound with a frequency greater than 20000 Hz. Children under the age of five, dogs, and owls can hear frequencies up to 25 kHz. Whales and elephants produce infrasonic sounds. Rhinoceros communicate with one another using a frequency as low as 5 Hz.
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