A) increasing temperature
B) increasing the pressure
C) chemical reaction
D) it is not possible
Correct Answer: D
Solution :
In radioactivity, rate of disintegration cannot be increased. Rate of disintegration \[\frac{dN}{dt}=-\lambda N\] \[\lambda ,\] = decay constant, N = initial amount. If N is fixed. Then, \[\frac{dN}{dt}=\] constant Rate of disintegration does not depend upon external fraction.
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