frequency of ultrasound is-
5 405 628652db44265e01a9716d9b
Q:
frequency of ultrasound is-
- 1< 20 Hzfalse
- 2> 20 Hz and < 20,000 Hzfalse
- 3< 20 Hz and> 20,000 Hzfalse
- 4> 20,000 Hz.true
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