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    Physics for Engineers and Scientists
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    Exam 40: Nuclei
  5. Question
    A Certain Radioisotope Has a Lifetime of 40 Days
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A Certain Radioisotope Has a Lifetime of 40 Days

Question 22

Question 22

Multiple Choice

A certain radioisotope has a lifetime of 40 days. The time it will take for 3/4 of the originally present nuclei to disintegrate is


A) 17 days.
B) 30 days.
C) 40 days.
D) 63 days.
E) 80 days.

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