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A radioactive isotope X with a half-life...

A radioactive isotope X with a half-life of `1.37xx10^(9)` yr decays to Y which is satble. A sample of rock from the moon was found to contain both the elements X and Y which were in the ratio of 1 : 7. The age of the rock is

A

`4.11xx10^9` year

B

`2.74 xx10^9` year

C

`5.48xx10^9` year

D

`1.37xx10^9` year

Text Solution

Verified by Experts

The correct Answer is:
A
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AAKASH INSTITUTE ENGLISH-NUCLEI-ASSIGNMENT (SECTION-A)
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