railway RRB Technician Grade 1 Mock Test 2024 General Science Physics Wave

ମଣିଷଙ୍କ ଶ୍ରବଣ ପାଇଁ ଶବ୍ଦ ତରଙ୍ଗର ଫ୍ରିକ୍ୱେନ୍ସିର ପରିସର କ’ଣ?

1
16 kHz ରୁ 200 kHz
2
16 Hz ରୁ 16 kHz
3
20 Hz ରୁ 20 kHz
4
14 Hz ରୁ 20 kHz
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