Physics · 2022
JEE Main · 29 June 2022, Shift 2 · Q58
The half life of a radioactive substance is 5 years. After x years a given sample of the radioactive substance gets reduced to 6.25 % of its initial…
The half life of a radioactive substance is $\displaystyle 5$ years. After $\displaystyle x$ years a given sample of the radioactive substance gets reduced to $\displaystyle 6.25 \%$ of its initial value. The value of $\displaystyle x$ is \_\_\_\_
Official answer
20
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