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Nuclear Fusion

If the amount...

Question

If the amount of a radioactive substance is increased three times, the number of atoms disintegrating per unit time would:

A

be double

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B

not be change

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C

be triple

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D

be

\frac{1}{3}

rd of the original number of atoms

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Solution

The correct option is C be triple
$\frac{d N}{d t} = - λ N$

If N becomes three times then the number of atoms disintegrating per unit time also becomes three times.

Hence, option C is correct.

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