Chapter 1: Atomic & Nuclear Physics Mcqs for High School - Grade 10

Q.  If a radioactive element has a half-life of 40 minutes. The initial count rate was 1000 per minute, then how long will it take for the count rate to drop to 125 per minutes

a. 120 minutes
b. 90 minutes
c. 30 minutes
d. 60 minutes


ANSWER: See Answer
 
No explanation is available for this question!
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