If the mass of a radioactive sample is doubled, the activity of the sample and the disintegration constant of the sample are respectively

Options

A. A increases , `lamda` decreases
B. A decreases , `lamda` increases
C. A increases , `lamda` remains the same
D. A decreases , `lamda` remains the same

Answer

C

Explanation

A depends upon the radioactive mass but `lamda` does not depend upon the mass. Hence A is doubled but A does not change.