JEE Main & Advanced
Physics
Atomic Physics
Question Bank
Numerical Value Type Questions - Nuclei
question_answer
A radioactive element decays by \[\beta \] emission. A detector records n beta particles in 2 second and in next 2 seconds it records 0.75 n beta particles. Find mean life (in second) corrected to nearest whole number. Given \[\ln 2=0.6931\] and \[\ell n3=\text{ }1.0986.\]