1.

If the disintegration constant is \[6.93\times {{10}^{-6}},\] then half-life of \[_{6}{{C}^{14}}\] will be                                        [KCET 2001]

A.                 \[{{10}^{2}}\]yrs              
B.                 \[{{10}^{3}}\]yrs
C.                 \[{{10}^{4}}\]yrs              
D.                 \[{{10}^{5}}\]yrs
Answer» E.


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