For a radioactive isotope

PHYSICS · Single correct · A Level · Physics · Nuclear physics · Nuclear physics

Problem

X

, the magnitude of the slope of a graph of

\ln N

versus time is

S

. If the decay constant of the isotope is doubled, what happens to the magnitude of the slope of the

\ln N

versus time plot? (a) It becomes

4S

(b) It becomes

2S

\dfrac{S}{2}

(d) It remains

S