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  4. The rate of disintegration of fixed quantity of a radioactive element can be increased by

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Q. The rate of disintegration of fixed quantity of a radioactive element can be increased by

Chhattisgarh PMTChhattisgarh PMT 2011

Solution:

In radioactivity, rate of disintegration cannot be increased.
Rate of disintegration $\frac{d N}{d t}=-\lambda N \lambda$, decay constant, $N =$ initial amount.
If $N$ is fixed.
Then, $\frac{d N}{d t}=$ constant Rate of disintegration does not depend upon external fraction.