Binding energy of a deuteron is 2.2 MeV and binding energy of He-4 is 28 MeV. If two deuterons fuse to make one He-4 nucleus, the energy released is:
Options

Question

Binding energy of a deuteron is 2.2 MeV and binding energy of He-4 is 28 MeV. If two deuterons fuse to make one He-4 nucleus, the energy released is:

G1 Physics · Accepted Answer

Initial BE of two deuterons = 2 × 2.2 = 4.4 MeV. Final BE of He-4 = 28 MeV. Energy released Q = 28 − 4.4 = 23.6 MeV. Final answer: Option C.