Sharanya posted an Question
March 29, 2021 • 03:30 am 30 points
  • CSIR NET
  • Physical Sciences

91. the half life of a radio active sample is 20 days. this means that (a) the substance completely disintegrates in 40 days (b) the substance completely disint

91. The half life of a radio active sample is 20 days. This means that (A) The substance completely disintegrates in 40 days (B) The substance completely disintegrates in 80 days (C) 1/8 partof the substance disintegrates in 60 days (D) 7/8 part of the substance disintegrates in 60 days

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