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Question

Which of the following sound can be heard by monkeys and deer but not by humans?


A

infrasonics

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B

ultrasonics

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C

supersonics

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Solution

The correct option is B

ultrasonics


  1. Humans can hear the sounds whose frequency lies between 20 hertz to 20000 hertz, called audible range.
  2. Ultrasonics are sounds whose frequency is greater than 20000 hertz.
  3. Infrasonics are sounds that have a frequency of less than 20 hertz.
  4. Humans can neither hear infrasonics nor ultrasonics.
  5. Deer and monkeys can hear ultrasonics.

Hence the correct option is B.


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