Home
Class 12
PHYSICS
The age of a rock containing lead and ur...

The age of a rock containing lead and uranium is equal to `1.5xx10^9` years. The uranium is decaying into lead with half life equal to `4.5xx10^9` years. Find the ratio of lead to uranium present in the rock, assuming that initially no lead was present in the rock (given `2^(1/3)`=1.259)

Text Solution

Verified by Experts

The correct Answer is:
0.259
Promotional Banner

Similar Questions

Explore conceptually related problems

A radioactive isotope X with half-life 1.5xx10^(9) yr decays into a stable nucleus Y .A rock sample contains both elements X and Y in the ratio 1 : 15. They age of the rock is

A radio isotope X with a half life 1.4xx10^(9) yr decays of 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

A radio isotope X with a half life 1.4xx10^(9) yr decays of 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

The average mass of an atom of uranium is 3.9xx10^(-25) kg. Find the number of atom is 1 g of uranium.

The number of 238 U atoms in an ancient rock equals the number of 206 Pb atoms. The half-life of decay of 238 U is 4.5x10 9 years. Estimate the age of the rock assuming that all the 206 Pb atoms are formed from the decay of 238 U.

A radioactive sample of ^(238)U decay to Pb through a process for which the half is 4.5 xx 10^(9) year. Find the ratio of number of nuclei of Pb to ^(238)U after a time of 1.5 xx 10^(9) year Given (2)^(1//3)= 1.26

The present ages of A and B are in the ratio 9 : 4. Seven years hence, the ratio of their ages will be 5 : 3. Find their present ages.

The half life of ._92^238U undergoing alpha -decay is 4.5xx10^9 years. The activity of 1 g sample of ._92^238U is

The half-life of K^40 is 1.30xx10^9 y. A sample if 1.00g of pure KCI gives "160 dps" . The percentage fraction of K^40 present in the sample is:

In a smaple of rock, the ration .^(206)Pb to .^(238)U nulei is found to be 0.5. The age of the rock is (given half-life of U^(238) is 4.5 xx 10^(9) years).