1.

A wooden box excavated from Indus valley had an activity of 9.3 disintegration per minute per gm of carbon. What is the approximate age of this civilization?

Answer»

2000 years
5700 years
8100 years
Data insufficient

Solution :`t=(2.303xxt_(1//2))/(0.693)"LOG"(15.2)/(9.3)`
`=(2.303xx5760)/(0.693)"log"(15.2)/(9.3)`
`=(2.303xx5760)/(0.693)xx0.213`
`=4084.1` years=4084 years.
HENCE, the AGE of civilization is APPROXIMATELY 4000 years.


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