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>>Class 12
>>Physics
>>Nuclei
>>First Order Radioactive Decay
>> $The active amount of radioactive substan$

Question

The active amount of radioactive substance left after one hour whose half life is $20$ minutes is?

A

$\frac{1}{8}$

B

$\frac{1}{3 2}$

C

$\frac{1}{1 6}$

D

$\frac{1}{9}$

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Updated on : 2022-09-05

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Correct option is A)

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