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Can you explain the answer of this question below:
Half life of a radioactive substance which disintegrates by 75% in 60 minutes will be
  • A:
    120 min
  • B:
    30 min
  • C:
    45 min
  • D:
    20 min
The answer is b.
Most Upvoted Answer
Can you explain the answer of this question below:Half life of a radio...
Yes option B is correct answer....because 75 percentage of the substance is disintegrate by 2 half lives..2half lives=60÷t1t1=60÷2=30therefore: t=30 minutes...
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Community Answer
Can you explain the answer of this question below:Half life of a radio...
T75=2t50
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Can you explain the answer of this question below:Half life of a radioactive substance which disintegrates by 75% in 60 minutes will beA:120 minB:30 minC:45 minD:20 minThe answer is b.
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