Physics · 2014
NEET 2014 · 4 May · Code P · Q43
A radio isotope 'X' with a half life 1.4 × 10^9 years decays to 'Y' which is stable. A sample of the rock from a cave was found to contain 'X' and…
A radio isotope 'X' with a half life $\displaystyle 1.4 \times 10^9$ years decays to 'Y' which is stable. A sample of the rock from a cave was found to contain 'X' and 'Y' in the ratio $\displaystyle 1$ : 7. The age of the rock is :
Official answer
From NTA’s final answer key for this paper.
(3)
$\displaystyle 4.20 \times 10^9$ years
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NEET (UG) 2014 Physics question, with the answer from NTA’s final answer key. Where our answers come from.