Atoms and Nuclei

Section: Physics

Question : 13 of 33

Marks: +1, -0

An element X of a half-life of 1.4×109 years decays to form another stable element Y . A sample is taken from a rock that contains both X and Y in the ratio 1:7. If at the time of formation of the rock, Y was not present in the sample, then the age of the rock in years is

[AP EAPCET 21 May 2025 S1]

4.2×109
1.4×109
0.35×109
2.8×109

Validate

Go to Question:

Prev Question

Next Question