Which of the following statement(s) is/(are) correct - Vidyadip

MCQ

Which of the following statement(s) is$/$(are) correct

A
The rest mass of a stable nucleus is less than the sum of the rest masses of its separated nucleons
B
In nuclear fission, energy is released by fragmentation of a very heavy nucleus
C
In nuclear fusion, energy is released by fusing two nuclei of medium mass (approximately $100 \,a.m.u.$)
✓
Both $(a)$ and $(b)$

✓

Answer

Correct option: D.

Both $(a)$ and $(b)$

d
The rest mass of a stable nucleus is always less than the sum of rest masses of it's constituents and the difference is called the mass defect $\Delta m$. $\Delta mc ^2$ is used in keeping nucleons bounded.

This is called binding energy.

Nuclear fission is a nuclear reaction in which the nucleus of heavy atoms splits into two or more lighter nuclei. This fission process oftenly produces gamma photons.

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