The mean lives of radio active substances are 1620 years and 405 years for a particle and b particle respectively. Find out the time during three fourth of a sample will decay if it is decaying by both a and b emission simultaneously.
Abhinandan
9 Years agoGrade 12
1 Answer
Vikas TU
9 Years ago
Total decal constant that is,
k = k1k2/(k1+k2) =>after putting the values k1 = 1620 and 405
net k = 1/324 year.
N/4 would left after disintegrating three-fourth and hence,