AP EAMCET201822 Apr 2018Evening ShiftPhysicsNuclear PhysicsActual
The half life of ₉₂²³⁸ U against -decay is 13.86 10¹⁶ ~s . The activity of 1 ~g sample of ₉₂²³⁸ U is
Options
- A1.26 10^4 ~s ⁻¹
- B1.26 10⁻⁴ ~s ⁻¹
- C12.6 10^4 ~s ⁻¹
- D12.6 10⁻⁴ ~s ⁻¹
Correct answer
A. 1.26 10^4 ~s ⁻¹
Step-by-step solution
Activity of a sample is aligned R & = | d N d t |= - N N= 0.6931 T_ 1 / 2 N & = 0.6931 T_ 1 / 2 n N_A= 0.6931 T_ 1 / 2 m M N_A aligned With values, we get R=1.26 10^4 ~s ⁻¹