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A radioactive material (t1/2 = 30 days) gets spilled over the floor of a room. If initial activity is ten times the permissible value, after how many days will it be safe to enter the room
  • a)
    100
  • b)
    1000
  • c)
    300
  • d)
    10
Correct answer is option 'A'. Can you explain this answer?
Most Upvoted Answer
A radioactive material (t1/2= 30 days) gets spilled over the floor of ...
It will be safe to enter the room after the nuclei decreases to 1/10 of its initial amount.
→ Half life = 30 days
→ Using integration law,
 ∴ After 100 days, it will be safe to enter the room.
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A radioactive material (t1/2= 30 days) gets spilled over the floor of a room. If initial activity is ten times the permissible value, after how many days will it be safe to enter the rooma)100b)1000c)300d)10Correct answer is option 'A'. Can you explain this answer?
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