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Sound. — Science STD 8 — Question

Tamilnadu BoardEnglish MediumSTD 8ScienceSound.1 Mark
MCQ
Frequency is expressed in ………………..
  • ✓
    hertz
  • B
    meter
  • C
    Kilogram
  • D
    second
✓

Answer

Correct option: A.
hertz
hertz

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