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Clay absorbs radiation with time, releasing it only when hea

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Clay absorbs radiation with time, releasing it only when hea [#permalink] New post 16 Feb 2019, 11:26
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Clay absorbs radiation with time, releasing it only when heated. By heating a clay sculpture and measuring the radiation it releases, experts can determine to within a century when the sculpture was last heated. The original firing of the finished sculpture might be the occasion of that most recent heating.

Experts who obtain the year A.D. 1450 as an estimate for a given sculpture using the method described above would thereby most seriously undermine any claim that the sculpture was made in

(A) A.D. 1000
(B) A.D. 1400
(C) A.D. 1450
(D) A.D. 1500
(E) A.D. 1900
[Reveal] Spoiler: OA

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Re: Clay absorbs radiation with time, releasing it only when hea [#permalink] New post 22 Feb 2019, 20:58
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The heating method is accurate to within a century. So if the guess is A.D. 1450, then anywhere between 1350 and 1550 would be very believable. That eliminates choices B, C, and D.

Now, if a sculpture was made in A.D. 1000, it could have been heated again in 1450 for some reason. So getting a date of 1450 does not necessarily eliminate the possibility of the sculpture being made in A.D. 1000.

However, if the sculpture was made in A.D. 1900, then there's no way it would be dated at 1450. It wouldn't release that much radiation when heated. Hence, choice E is the least believable, and experts would undermine any claim that the sculpture was made in 1900.
Re: Clay absorbs radiation with time, releasing it only when hea   [#permalink] 22 Feb 2019, 20:58
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Clay absorbs radiation with time, releasing it only when hea

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