The time it will take a certain radioactive material with a half-life of 50 days to reduce to 1/32of its original number is

Assessment: JAMB UTME - Physics - 2005 Subject: Physics

Question 1 Report

The time it will take a certain radioactive material with a half-life of 50 days to reduce to 1/32of its original number is
Answer Details
The half-life of a radioactive material is the amount of time it takes for half of the material to decay. In this question, the half-life is given as 50 days, which means that after 50 days, half of the material will have decayed. To find the time it takes for the material to reduce to 1/32 of its original number, we need to determine how many half-lives it will take to reach that point. 1/32 is equivalent to 2^(-5) since 2^5 = 32. So the material needs to decay 5 half-lives to reach 1/32 of its original number. Since the half-life is 50 days, it will take 50 x 5 = 250 days for the material to reduce to 1/32 of its original number. Therefore, the answer is 250 days.

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