A radioactive element gets spilled over the floor of a room. Its half-life period is 30 days. If the initial velocity is ten times the permissible value, after how many days will it be safe to enter the room?
100 days
1000 days
300 days
10 days.
As we learned
Number of nuclei in terms of half life -
- wherein
Very useful to determine number of nuclei in terms of half life
Ans is 1
Option 1)
100 days
Option 2)
1000 days
Option 3)
300 days
Option 4)
10 days.
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