Question

Infrasound can be heard by
(a). Dog
(b). Bat
(c). Rhinoceros
(d). Human beings

Answer 1

- Hint: Infrasound is a low-frequency sound that is below 20Hz of the frequency range. So, it can only be heard and emitted by those living organisms who are sensitive to frequency range below 20 Hz.

Complete step-by-step solution -

Rhinoceros have extremely good ears and thus they are known as infrasonic animals. They can communicate via infrasonic sounds.
For Human Beings, the hearing frequency range is about 20 to 20,000 Hz for a healthy person.so evidently, a human cannot hear infrasound and neither a dog nor a bat. For a dog, the lower limit of the frequency range is 67 Hz.
The correct answer is Rhinoceros.

Additional information:
Our physical world is full of infrasonic sounds, for example, sonic boom produced in jet engines sounds produced by volcanoes, earthquakes, thunderstorms, crashing of ocean waves etc.
A lot of animals also communicate via infrasonic sound waves such as Whales, dolphins, elephants, hippos. Whales and dolphins are known to use infrasonic waves to navigate and elephants use them to attract their mates. These animals can even and feel sound waves, their hearing is so sensitive that they can even provide early warning for earthquakes or any natural calamity.
Infrasonic waves are also used in identifying possible locations of oil and natural gas sources. Certain minerals can be detected underground by using infrasonic frequencies.

Note: Rhinoceros are known to produce and hear sounds at frequencies as low as 4Hz,while bats can hear from 9kHz to 200kHz, for dogs the hearing range is from 64Hz to 23kHz and for humans it is from 20 Hz to 20kHz that is why these were not the appropriate answers.