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      Question

      Priya heard thunder 1.8 kilometers away, and the sound

      reached her ears after 20 seconds. What is the speed of the sound?
      A 50 m/s Correct Answer Incorrect Answer
      B 80 m/s Correct Answer Incorrect Answer
      C 100 m/s Correct Answer Incorrect Answer
      D 90 m/s Correct Answer Incorrect Answer

      Solution

      ATQ,

      Speed of sound

      = (1.8 Γ— 1000) / 20

      = 1800 / 20

      = 90 m/s

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