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There is a plot of binding energy per nucleon \( E_{b} \), against the nuclear mass \( M ; A, B, C, D, E, F \) correspond to different nuclei.
Consider four reactions
(i) \( A+B \rightarrow C+\varepsilon \)
(ii) \( C \rightarrow A+B+\varepsilon \)
(iii) \( D+E \rightarrow F+\varepsilon \) and
(iv) \( F \rightarrow D+E+\varepsilon \),
where \( \varepsilon \) is the energy released? In which reactions is \( \varepsilon \) positive?
(a) (i) and (iii)
(b) (ii) and (iv)
(c) (ii) and (iii)
(d) (i) and (iv)
\( \mathrm{P} \)
W
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