The frequency range in which some common animals can hear is shown in the graphic below.
A manufacturer wants to create a pest controller that will emit loud sounds that can be heard by insects and rodents (and will hence drive them away), but will not affect humans and pets.
What frequencies of sound should the pest controller produce and why?
(with explanation)
A. Below 20 hertz
B. 100 hertz - 1,000 hertz
C. 40,000 hertz - 100,000 hertz
D. Above 100,000 hertz
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Answer:
c) 40000hertz to 100000herz
Explanation:
because according to graph in sects an rats and insects could able to hear without disturbing human
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