21. Radio carbon dating is done by estimating in the specimen :
(a) The amount of ordinarily carbon still present (b) The radio of the amounts of 6C14 + 6C12 (c) The amount of radio carbon still present (d) None of these
Answer
Answer : (c)
Explanation
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Atomic Physics » Exercise - 124. The value of 1 electron volt = ............... J. (a) 1.6 x 1019 J (b) 1.6 x 10–19 J (c) 1.6 x 1020 J (d) 1.6 x 10–20 J