the time it will take a certain radioactive material with a half-life of 50 days to reduce to 1/32of its original number is
-
A.
250days -
B.
150days -
C.
300days -
D.
200days
Correct Answer: Option A
Explanation
Since 1/32, is the fraction left of any radioactive material after 5half lives, that is:
1/32= (1/2)5. Thus if a half life is 50 days, 5 half lives will be 50 x 5= 250 days