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The decay constant lambda of the radioac...

The decay constant `lambda` of the radioactive sample is probaility of decay of an atom in unit time, then

A

`lambda`-decrease as the age of atoms increases

B

`lambda`-increase as the age of atoms increases

C

`lambda` is independent of the age of atom

D

behaviour of `lambda` with time depends on the material

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The correct Answer is:
C
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  11. In a sample of radioactive material, what percentage of the initial nu...

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  16. 90% of the active nuclei present in a radioactive sample are found to ...

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