Rajasthan BoardEnglish MediumSTD 9ScienceSound1 Mark
Question
Infrasound can be heard by:
✓
Answer
Rhinoceros
Explanation:
Rhinos have extremely good ears, picking up infra-sound far deeper than the range of human hearing.
Rhinos, can hear down to a frequency of four hertz, whereas even a human baby, with entirely undamaged ears, can normally only pick up sounds as low as 20 hertz. Giraffes and elephants can also hear in this infra-sound range.
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