The frequency of ultrasound wave is typically
A. Above 20 kHz
B. Above 20,000 kHz
C. Below 20 kHz
D. Below 02 kHz
Answer: Option A
Solution(By Examveda Team)
Ultrasound refers to a sound wave with a frequency greater than the upper limit of human hearing, which is generally over 20 kHz. In general, humans can hear sounds with a frequency between 20 Hz and 20 kHz.This Question Belongs to General Knowledge >> Physics
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Option A is correct..