

MCQOPTIONS
Saved Bookmarks
1. |
The radium and uranium atoms in a sample of uranium mineral are in the ratio of \[1:2.8\times {{10}^{6}}\]. If half-life period of radium is 1620 years, the half-life period of uranium will be [MP PMT 1999] |
A. | \[45.3\times {{10}^{9}}\] years |
B. | \[45.3\times {{10}^{10}}\] years |
C. | \[4.53\times {{10}^{9}}\] years |
D. | \[4.53\times {{10}^{10}}\] years |
Answer» D. \[4.53\times {{10}^{10}}\] years | |