Teaching AWES Army Public School TGT Mock Test 2024 General Science Physics Wave

ଏକ ଅଲଟ୍ରାସୋନିକ୍ ଶବ୍ଦ ତରଙ୍ଗର ଫ୍ରିକ୍ୱେନ୍ସି _________ ଠାରୁ ଅଧିକ:

1
20 Hz
2
200 Hz
3
20000 Hz
4
2000 Hz
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