The half life of radioactive Radon is 3....

The half life of radioactive Radon is `3.8 days` . The time at the end of which `(1)/(20) th` of the radon sample will remain undecayed is `(given log e = 0.4343 ) `

A

3.8 days

B

16.5 days

C

33 days

D

76 days

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The correct Answer is:

B

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