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Sub-Atomic Particles

If two light ...

Question

If two light nuclei are fused together in nuclear reaction, the average energy per nucleon :

A

increases

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B

decreases

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C

cannot be determined

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D

remains same

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Solution

The correct option is B decreases
The two nuclei are fused together in nuclear reaction, the average kinetic energy per nucleon decreased due to some kinetic energy released due to course of a reaction.

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Q. Assertion (A) : If a heavy nucleus is split into two medium sized parts,each of the new nuclei will have more binding energy per nucleon than the original nucleus.

Reason (R): Joining two light nuclei together to give a single nucleus of medium size means more binding energy per nucleon in the new nucleus.

Q. For nuclei with A > 100,
(a) the binding energy of the nucleus decreases on an average as A increases
(b) the binding energy per nucleon decreases on an average as A increases
(c) if the nucleus breaks into two roughly equal parts, energy is released
(d) if two nuclei fuse to form a bigger nucleus, energy is released.

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7.0 M e V

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_{3}^{7} Li +_{1}^{1} H \to_{2}^{4} He + Q,

the value of energy

Q

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