Q81. The mass defect of an atomic nucleus refers to:Physics — NUST Mock By IBAGRADS 3 — Question 81 of 200A. an error in the measurement of the masses of nucleons.B. the mass that is converted into the binding energy holding the nucleus together.C. the packing fraction of the nucleus.D. the difference in the number of neutrons and protons within the nucleus.Practice more Physics MCQs for entrance exam preparation on Examora.io.← Previous Question Next Question →