GAT Subject
Engineering
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6. | A certain radioactive nuclide of mass number ‘x’ decays by β-emission and α-emission to a second nuclide of mass number ‘t’. Which of following correctly relates ‘x’ and ‘t’? | |
A. | x = t + 4 | |
B. | x = t - 4 | |
C. | x – 3 = t | |
D. | x – 1 = t | |