Consider the following Assertion (A) and Reason (R). Choose the correct option.

Question

G1 Physics · Accepted Answer

Heavy nuclei lie on the slowly falling side of the binding-energy-per-nucleon curve. After fission, the medium-mass fragments are generally closer to the maximum of the curve and have larger BE/A. Therefore their total binding energy is greater, while their total rest mass is smaller. The difference is released as energy: Q = Δm c². Thus both Assertion and Reason are true, and the Reason correctly explains the Assertion. Correct option: A.