JIPMER2015PhysicsNuclear Physics
The half-life of ¹⁹⁸ Au is 2.7 days. The average life is
Options
- A4 days
- B3.4 days
- C3.9 days
- DNone of the above
Correct answer
C. 3.9 days
Step-by-step solution
The half-life and the decay constant are related as aligned t₁₂ & = 2 = 0.693 & = 0.693 t_ 1 / 2 = 0.693 2.7 day & = 0.693 2.7 24 3600 ~s & =2.9 10⁻⁶ ~s ⁻¹ aligned Now average life t_ a v = 1 =3.9 days