If 8.0 g of a radioactive substance has a half-life of 10 hrs., the half-life of 2.0 g of the same substance is [J & K 2005]

If 8.0 g of a radioactive substance has a half-life of 10 hrs., the ha

1.	If 8.0 g of a radioactive substance has a half-life of 10 hrs., the half-life of 2.0 g of the same substance is [J & K 2005]
A.	2.6 hr
B.	5 hr
C.	10 hr
D.	40 hr
Answer» D. 40 hr

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If 8.0 g of a radioactive substance has a half-life of 10 hrs., the half-life of 2.0 g of the same substance is [J & K 2005]

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