The half-life period of radioactive material if its activity drops to (1/16)th of its initial value in 30 years is________
A. 1.5 years
B. 3.5 years
C. 7.5 years
D. 15 years
Answer:C
The half-life period of radioactive material if its activity drops to (1/16)th of its initial value in 30 years is________
A. 1.5 years B. 3.5 years C. 7.5 years D. 15 years