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NCERT Exemplar Solutions Class 9 Science Solutions for Sound - Exercise in Chapter 12 - Sound
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Infrasound can be heard by
(a) dog
(b) bat
(c) rhinoceros
(d) human beings
Answer:
The answer is (c) rhinoceros
Explanation:
Infrasound has a frequency less than 20 Hz and Rhinoceroses communicate using Infrasound waves of frequency of 5 Hz hence rhinoceros is the right answer.
Video transcript
"hello everyone welcome to leader
learning
i'm good preet your science tutor
today's question is infrasound
can be heard by
a dog b bat
c rhinoceros a d human beings
so here four options have been given to
you and you have to find out
that infrasound can be heard by which
animal
so let's start our answer
infrasound
has a frequency
less than
20 hertz
and here
rhinosaurs
rhinoceros are the
animals
which communicate
which communicate by infrasound
of frequency
5 hertz so the correct
option for this question will be
option c that is rhinosource
for more such videos please subscribe
leader learning
and for any doubts drop a comment thank
you"
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