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A radioactive isotope decays at such a r...

A radioactive isotope decays at such a rate that after 192 minutes only 1/16 of the original amount remains. The half-life of the radioactive isotope is

A

32 min

B

48 min

C

12 min

D

24 min

Text Solution

Verified by Experts

The correct Answer is:
B
`K=(2.303)/(192)log16`
`t_(1//2)-(0.693)/(K)=(0.693)/((2.303)/(192)xx4log2)=48min`
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