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Sound — Physics STD 11 Science — Question

Maharashtra BoardEnglish MediumSTD 11 SciencePhysicsSound1 Mark
MCQ
At normal temperature, for an echo to be heard the reflecting surface should be at a minimum distance of ………………. m.
  • A
    34.4
  • ✓
    17.2
  • C
    10
  • D
    20
✓

Answer

Correct option: B.
17.2
17.2

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