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Q.

Apiece of wood from an archaeological source shows a C14 activity which is 60% of the activity found in fresh wood today. The age of archaeological sample will be:

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a

4246 yrs

b

4628 yrs

c

6248 yrs

d

4624 yrs

answer is A.

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Detailed Solution

0.693t1/2C14=2.303tlog⁡N0N0.6935760=2.303tlog⁡10060t=4246yrs
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