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Q.

The half life period of Pb²¹⁰ is 22 years. If 2g of Pb²¹⁰ is taken, then after 11 years the amount of Pb²¹⁰ will be present is

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a

0.707g

b

1.414g

c

2.828g

d

0.1414g

answer is B.

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Detailed Solution

$t = \frac{t_{\frac{1}{2}}}{\log 2} \log (\frac{N_{0}}{N})$

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