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Half life of x = 2 × 10^9 yearsHalf life of y = 4 × 10^9 yearsAssuming rock initially was formed by equal number of x and y of radioactive sample. In the ancient rock discovered now is having concentration x : y = 1:4, the present age of the rock is? ~options->1.) 2 × 10^9 years2.) 4 × 10^9 years3.) 6 × 10^9 years4.) 8 × 10^9 years |
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Answer» Half life of x = 2 × 10^9 years Half life of y = 4 × 10^9 years Assuming rock initially was formed by equal number of x and y of radioactive sample. In the ancient rock discovered now is having concentration x : y = 1:4, the present age of the rock is? ~options-> 1.) 2 × 10^9 years 2.) 4 × 10^9 years 3.) 6 × 10^9 years 4.) 8 × 10^9 years |
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