A radioactive element has a half life of 4 days. The fraction that has decayed in 16 days is?
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Correct Answer: Option A
Explanation:
16 days = 4 half lives.
The fraction left 16 days = after 4 half live, = (1/2)4 = (1)/16.
∴ fraction delayed = (15)/16
16 days = 4 half lives.
The fraction left 16 days = after 4 half live, = (1/2)4 = (1)/16.
∴ fraction delayed = (15)/16