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Question 8

A certain radioactive element has a half life of 20 years. How long will it take the activity to become 1/4 of its original?

  • A.20 years
  • B.40 years
  • C.60 years
  • D.80 years
Objective

Question details

Exam body
UI
Subject
Physics
Year
2018/2019
Question no.
#8
Type
Objective
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