A sample contains $16\, gm$ of a radioactive material, the half life of which is two days. After $32\, days,$ the amount of radioactive material left in the sample is
A sample contains $16\, gm$ of a radioactive material, the half life of which is two days. After $32\, days,$ the amount of radioactive material left in the sample is
- A
Less than $1\, mg$
- B
$\frac{1}{4}gm$
- C
$\frac{1}{2}gm$
- D
$1\, gm$
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