The decay constant of a radioactive sample is `lambda`. The half-life and the average-life of the sample are respectively

Options

A. a) `1//(lambda) and 1n2//(lambda)`
B. b) `(1n 2//(lambda)) and 1//(lambda)`
C. c) `lambda(1n 2) and 1//(lambda)`
D. d) `lambda//(1n 2) and 1//lambda)`

Answer

B