Advertisements
Advertisements
Question
What is meant by radioactivity?
Solution
The phenomenon of spontaneous emission of highly penetrating radiations such as α, β and γ rays by an element is called radioactivity.
APPEARS IN
RELATED QUESTIONS
What is mean life of nucleus? Give the expression.
What is half-life of nucleus? Give the expression.
Define curie.
What are the constituent particles of neutron and proton?
Discuss the alpha decay process with example.
Obtain the law of radioactivity.
Discuss the properties of neutrino and its role in beta decay.
Half-lives of two radioactive elements A and B are 20 minutes and 40 minutes respectively. Initially, the samples have equal number of nuclei. Calculate the ratio of decayed numbers of A and B nuclei after 80 minutes.
If T is the half-life of radioactive material, then the fraction that would remain after a time `"T"/2` is:
The radio active decay of uranium into thorium is expressed by the 92U238 `->` 90Th234 + x where x is
