Teaching TS DSC Secondary Grade (సెకండరీ గ్రేడ్ టీచర్) Teacher 2024 Mock Test General Science Physics

यदि किसी ध्वनि तरंग का आवर्तकाल 0.04 सेकंड है, तो उसकी आवृत्ति ज्ञात कीजिए। 

1
25 Hz
2
500 Hz
3
50 Hz
4
22 Hz
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