The binding energy of nuclei X and `Y` are `E_(1)` and `E_(2)`, respectively. Two atoms of X fuse to give one atom of `Y` and an energy `Q` is released. Then,

Options

A. `Q=2E_(1) -E_(2)`
B. `Q=2E_(2)-2E_(1)`
C. `Qlt2E_(1) -E_(2)`
D. `Q gt2E_(2) -2E_(1)`

Answer

B

Explanation

During fusion, binding energy of daughter nucleus is always greater than the total binding energy of the parent nuclei. The difference of binding energied is released. Hence,
`Q=E_(2) -2E_(1)`.