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 :-

NEET 2021 Model Test Paper 8

Question : 42 of 180

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The half-life of radioactive radon is 3.8 days.
The time at the end of which (

)th of the radon sample will remain undecayed, is :-

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