Question
Two radioactive elements A and B initially have same number of atoms. The half life of A is same as the average life of B. If _A and _B are decay constants of A and B respectively, then choose the correct relation from the given options.
BITSAT
Physics
Nuclear Physics
2023
BITSAT 2023 (Memory Based Paper 2)
BITSAT Physics Question (2023) — Solution
Options
- A. _A= _B
- B. _A=2 _B
- C. _ A = _ B 2
- D. _ A 2= _ B
Answer
C. _ A = _ B 2
Step-by-step solution
It is given that aligned & ( T _1 2 )_ A = ( T _ av )_ B \\ & T _ 1 / 2 = n 2 and T _ av = 1 \\ & n 2 _ A = 1 _ B _ A = _ B n 2 aligned
Related: Physics — Nuclear Physics · All PYQ Banks