Ashok Kumar Nehra posted an Question
February 20, 2021 • 14:15 pm 30 points
  • CSIR NET
  • Physical Sciences

If a charged pion that decays in 10* second in its own rest frame is to travel 30 metres in the laboratory before decaying, the pion's speed must be most nearly

If a charged pion that decays in 10* second in its own rest frame is to travel 30 metres in the laboratory before decaying, the pion's speed must be most nearly (1) 0-43x 108 m/s (2) 2-84 x10 m/s (3) 2.90x 108 m/s (4) 2.98x 10 8 m/s

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