InterviewSolution
Saved Bookmarks
InterviewSolution
| 1. |
{ 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 }Y in the }}{ ratio }1:7. The age of the rock is [AlPMT-2014] }}{ (1) }1.96×10^9 years }}{ (2) }3.92×10^9 years }}{ (3) }4.20×10^9 years }}{ (4) }8.40×10^9 years |
| Answer» { 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 }Y in the }}{ ratio }1:7. The age of the rock is [AlPMT-2014] }}{ (1) }1.96×10^9 years }}{ (2) }3.92×10^9 years }}{ (3) }4.20×10^9 years }}{ (4) }8.40×10^9 years | |