Teaching DSSSB TGT Mock Test 2025 General Science Physics Wave

માનવ કાન દ્વારા અવાજ સાંભળવાનું આવર્તન કઈ શ્રેણીમાં છે?

1
20 Hz – 200 kHz
2
10 Hz – 20 kHz
3
20 Hz – 20 kHz
4
15 Hz – 20 Hz
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