Home Physics Atomic and Nuclear Physics Radioactivity The half-life of a radioactive substance is …
Physics Atomic and Nuclear Physics Radioactivity MCQ (Single Correct)

The half-life of a radioactive substance is 3.6 days. How much of 20 mg of this radioactive substance will remain after 36 days

A
0.0019 mg
B
1.019 mg
C
1.109 mg
D
0.019 mg

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Text Solution

Verified by Experts
The correct answer is:
D

Half life days
Initial quantity
Total line days
The number of half lives

Hence, mass of radioactive substance left after 10 half lives

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