Question

After 4 hours,$\frac{1}{16}$ of the initial amount of a certain radioactive isotype remains undecayed. What is the half life of the isotope?

• A. 15 min
• B. 30 min
• C. 45 min
• D. 60 min

Answer 1

Answer: (D)

60 min

Answer 2

The correct option is(D):60 min