Why fission releases about 200 MeVविखंडन में लगभग 200 MeV क्यों निकलती हैWhy fission releases about 200 MeV

NCERT Section 13.7.1 · Class 12 Physics · Chapter 13 · interactive diagram

Parts and what they mean

• Zero of energy: free nucleons (ऊर्जा का शून्य: मुक्त न्यूक्लिऑन) — Take the energy of 240 separate, resting nucleons as zero.
• A = 240 nucleus (A = 240 नाभिक) — E_bn ≈ 7.6 MeV, so its energy is 240 × 7.6 = 1824 MeV below the free nucleons.
• Two A = 120 nuclei (दो A = 120 नाभिक) — E_bn ≈ 8.5 MeV for each fragment: more tightly bound, so a lower energy level.
• Energy released (मुक्त ऊर्जा) — Gain in binding energy = 240 × (8.5 − 7.6) = 240 × 0.9 = 216 MeV ≈ 200 MeV per fission.
• Binding energy (बंधन ऊर्जा) — The depth below the free-nucleon line is the total binding energy E_b.

Original diagram drawn by Simple Learning Hub, based on NCERT Section 13.7.1. Report a mistake