Nuclei - Result Question 35

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36. In the reaction, $ _1^{2} H+ _1^{3} H \longrightarrow _2^{4} He+ _0^{1} n$, if the binding energies of $ _1^{2} H, _1^{3} H$ and $ _2^{4} He$ are respectively, $a, b$ and $c$ (in $MeV$ ), then the energy (in $MeV$ ) released in this reaction is

======= ####36. In the reaction, $ _1^{2} H+ _1^{3} H \longrightarrow _2^{4} He+ _0^{1} n$, if the binding energies of $ _1^{2} H, _1^{3} H$ and $ _2^{4} He$ are respectively, $a, b$ and $c$ (in $MeV$ ), then the energy (in $MeV$ ) released in this reaction is

3e0f7ab6f6a50373c3f2dbda6ca2533482a77bed:content/english/neet-pyq-chapterwise/physics/nuclei/nuclei—result-question-35.md (a) $a+b+c$

(b) $a+b-c$

(c) $c-a-b$

(d) $c+a-b$

[2005]

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Answer:

Correct Answer: 36. (c)

Solution:

  1. (c) $ _1^{2} H$ and $ _1^{3} H$ requires $a$ and $b$ amount of energies for their nucleons to be separated.

$ _2^{4} He$ releases $c$ amount of energy in its formation i.e., in assembling the nucleons as nucleus.

Hence, Energy released $=c-(a+b)=c-a-b$