Question

When two nuclei (A < 10) fuse together to form a heavier nucleus, the

(A) binding energy per nucleon increases.
(B) binding energy per nucleon decreases.
(C) binding energy per nucleon does not change.
(D) total binding energy decreases.​

Answer 1

Answer:

When two nuclei (A < 10) fuse together to form a heavier nucleus, the

(A) binding energy per nucleon increases.

Explanation:

As we know that binding energy per nucleon decides the stability of the nucleus

As we move from starting i.e. z = 1 the binding energy per nucleon increases till iron.

After that binding energy per nucleon will decrease for higher mass number

So for light nucleus we know that binding energy per nucleon will increase while two or more nucleus will fuse together

So here it will get stable due to fusion

So correct answer is given as

(A) binding energy per nucleon increases.

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Topic : Binding Energy

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Answer 2

When two nuclei (A < 10) fuse together to form a heavier nucleus, the (A) binding energy per nucleon increases.

Explanation:

• Two nucleus repel each other because of nuclei have like charge.
• So, tremendous amount of heat and pressure is required to fuse two nucleus.
• During fusion process, there is loss of mass which is dissipated as tremendous energy.
• This increases the binding energy between nucleons. This is given by the formula:

E = mc²

Where, c is nucleus binding energy

• The larger the binding energy, the lesser the mass per nucleon.