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6 Radioactivity

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Question 55

The isotopes carbon-12 ( $612C_{6}^{12}\text{C}$ ) and carbon-14 ( $614C_{6}^{14}\text{C}$ ) are of central importance in physics and archaeology. Let $S_{12}$ be the specific charge of a bare carbon-12 nucleus, and $S_{14}$ be the specific charge of a bare carbon-14 nucleus.

Assuming the mass of a nucleon is constant (i.e., neglecting mass defect), what is the ratio of their specific charges, $S14S12\displaystyle \frac{S_{14}}{S_{12}}$ ?

$1$

$76\frac{7}{6}$

$67\frac{6}{7}$

$12\frac{1}{2}$

Markscheme

6 Radioactivity Questions

GCSE
Physics
6 Radioactivity

6 Radioactivity

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6 Radioactivity

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Question 55

Assuming the mass of a nucleon is constant (i.e., neglecting mass defect), what is the ratio of their specific charges, $S14S12\displaystyle \frac{S_{14}}{S_{12}}$ ?

$1$

$76\frac{7}{6}$

$67\frac{6}{7}$

$12\frac{1}{2}$

Markscheme

6 Radioactivity Questions

GCSE
Physics
6 Radioactivity