Civil Services HPPSC (Himachal Pradesh) HPAS Mock Test 2021 General Science Physics Wave

खालीलपैकी कोणती ध्वनी वारंवारता मानवी कानांद्वारे ऐकली जाऊ शकते?

1
15 हर्ट्झ 
2
40,000 हर्ट्झ 
3
10000 हर्ट्झ 
4
50,000 हर्ट्झ 
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