JEE Main 2018 — Nuclear Physics Question with Solution
JEE Main 2018 (15 Apr Shift 1 Online)
Question
A solution containing active cobalt having activity of and decay constant is injected in an animal's body. If of blood is drawn from the animal's body after of injection, the activity found was 300 decays per minute. What is the volume of blood that is flowing in the body? decay per second and at
Choose an option
Show full solutionCorrect option: D
Correct answer
D5 litres
Step-by-step explanation
Let initial activity
Activity in of blood at ,
Activity of whole blood at time . Total volume of the blood in the person, V
litre
Practice this on the real CBT interface
Solve this JEE Main question (and the rest of the Nuclear Physics chapter) on PrepSharp's TCS iON-style CBT player — with timer, bookmarks and session analytics.
Solve interactively →About this question
This is a previous-year question from JEE Main 2018, 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.