If 4 gm of a radioisotope has a half life period of 10 days, the half life of 2

Question

If 4 gm of a radioisotope has a half life period of 10 days, the half life of 2 gm of the same istotope will be __________ days.

Options:

A . 5

B . 10

C . 20

D . 30

Answer: Option B

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