After two hours, one sixteenth of the starting amount of a certain radioactive isotope remained undecayed. The half life of the isotope is: [1]
A. 15 minutes
B. 30 minutes
C. 45 minutes
D. one hours
Answer:B
After two hours, one sixteenth of the starting amount of a certain radioactive isotope remained undecayed. The half life of the isotope is: [1]
A. 15 minutes B. 30 minutes C. 45 minutes D. one hours