Ultrasound has frequency of vibration
$(a)$. between 20 and 20000 Hz
$(b)$. below 20 Hz
$(c)$. above 20000 Hz
$(d)$. between 500 and 10000 Hz

AcademicPhysicsNCERTClass 8

An ultrasound wave has a frequency of vibration above $20000\ Hz$.

Therefore, option $(c)$ is correct.

raja
Updated on 10-Oct-2022 13:29:14

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