A radioactive substance has a half-life of $1$ year. The fraction of this material, that would remain after $5$ years will be
A radioactive substance has a half-life of $1$ year. The fraction of this material, that would remain after $5$ years will be
- A
$\frac{1}{{32}}$
- B
$\frac{1}{5}$
- C
$\frac{1}{2}$
- D
$\frac{4}{5}$
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- [IIT 2001]
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- [JEE MAIN 2021]