Teaching Railway Teacher PRT 2025 Mock Test Series General Science Physics Wave

ମନୁଷ୍ୟ ପାଇଁ ଧ୍ୱନି  ଶୁଣିବା ର ସୀମା _____। 

1
10 Hz ରୁ  10000 Hz
2
10 Hz ରୁ 1000 Hz
3
20 Hz ରୁ  20000 Hz
4
10 Hz ରୁ  2000 Hz
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