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Question 46

A radioactive substance of mass 768g has a half life of 3 years. After how many years does this substance leave only 6g undecayed?

  • A.21
  • B.18
  • C.15
  • D.12
Objective

Question details

Exam body
WAEC
Subject
Physics
Year
2006
Question no.
#46
Type
Objective
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