(a) 5, 6 6)6, 5 26. half-life of two radioactive elements a and b are 20 minutes and 40 minutes, respectively. initially, the samples have equal number of nucle

(a) 5, 6 6)6, 5 26. Half-life of two radioactive elements A and B are 20 minutes and 40 minutes, respectively. Initially, the samples have equal number of nuclei. After 80 minutes, the ratio of decayed numbers of A and B nuclei will be: (a) 1:16 (b) 4:1 (c) 1:4 (d) 5:4 A-A