JEE Main 2019 — Nuclear Physics Question with Solution
JEE Main 2019 (12 Jan Shift 2)
Question
In a radioactive decay chain, the initial nucleus is . At the end, there are -particles and -particles which are emitted. If the end nucleus is and are given by:
Choose an option
Show full solutionCorrect option: A
Correct answer
A
Step-by-step explanation
As we know that in alpha decay mass number reduced from for and the atomic number reduced by two
and in beta decay the mass number became unchange and atomic number increase from one
Change in
Change in
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This is a previous-year question from JEE Main 2019, covering the Nuclear Physics chapter of Physics. PrepSharp catalogues every PYQ from JEE Main with a verified answer key and step-by-step solution prepared by IIT alumni — so you can search by chapter, topic or year and revise efficiently.