the ultrasonic frequency is
a) 2000 Hz
b) 20000 Hz
c) 30000Hz
d) 10000 Hz
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b ] 20 , 000 Hz
Answered by
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The ultrasonic frequency is :-
a) 2000 Hz
b)20000 Hz
c)30000 Hz✓
d)10000 Hz
Note:- Ultrasonic frequencies are always 20000 Hz +
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