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Q.

Which has the higher frequency – ultrasonic sound or infrasonic sound?



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a

Infrasonic

b

Ultrasonic

c

Both are same

d

Can’t say  

answer is A.

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Detailed Solution


Concept: The term "ultrasonic sound" describes sound waves with a frequency higher than what humans can hear. Contrarily, infrasonic sound waver refers to sound waves with a frequency lower than that of human hearing.
 Ultrasonic sound waves are those that have a frequency greater than 20000 Hz, which is the highest limit of human hearing. Infrasonic sound waves, on the other hand, have a frequency lower than 20Hz, which is below the human hearing range's lowest limit. Between 20Hz and 20000 Hz is the human hearing range.
Hence, option 1 is correct.
 
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