Which of the following formulae gives the expression for half-life of a radioactive isotope when ‘λ’ is the decay constant?
A. 0.762/λ
B. 0.693/λ
C. 0.937/λ
D. 0.258/λ
Answer:B
Which of the following formulae gives the expression for half-life of a radioactive isotope when ‘λ’ is the decay constant?
A. 0.762/λ B. 0.693/λ C. 0.937/λ D. 0.258/λ
Explanation: The formula to calculate half-life of a radioactive isotope is 0.693/λ. It is the time required for half the initial stock of atoms to decay.