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The Carbon-14 Activity of Some Ancient Indian Corn Was Found

Question 111

Multiple Choice

The carbon-14 activity of some ancient Indian corn was found to be 7.0 disintegrations per minute (dpm) per gram of carbon. If present-day plant life has 16 dpm per gram of carbon, how old is the Indian corn? (t1/2 = 5,730 yr)


A) 6,800 yr
B) 2,500 yr
C) 4,700 yr
D) 10,000 yr
E) 7,200 yr

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