A sample of radioactive element containing 
active nuclei. Half life of element is 10 days, then number of decayed nuclei after 30 days
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
C
Number of initial active nuclei 
Number of decayed nuclei after 10 days (half life)
Remaining number of nuclei after 10 days
Number of decayed nuclei in next 10 days
Similarly, number of decayed nuclei in next 10 days 
Total number of nuclei decayed after 30 days
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