JEE Main 2020PhysicsNuclear PhysicsMediumMCQ

JEE Main 2020Nuclear Physics Question with Solution

JEE Main 2020 (05 Sep Shift 1)

Question

Activities of three radioactive substances A, B and C are represented by the curves A, B and C, in the figure. Then their half-lives T12A:T12B:T12C are in the ratio:

Choose an option

Show full solutionCorrect option: C
Correct answer
C2: 1: 3

Step-by-step explanation

R=R0e-λt

lnR=-λ·nt+lnR0

Slope=ln2t1/2=λ

T1A:T1B:T1C=2:1:3

 

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About this question

This is a previous-year question from JEE Main 2020, 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.