Question

The energy released per fission of U-235 is about 200 MeV. Then the amount of energy released when all the atoms in 1 gram of U-235 undergo fisson is-

• A. 2.3 × 10⁷ J
• B. 8.2 × 10¹⁰ J
• C. 4.1 × 10¹⁵ J
• D. 20,000 J

Answer 1

Answer: (B)

8.2 × 10¹⁰ J

Answer 2

No. of nucleus in 1 gm ≡ $\frac { 6.023 \times 10 ^ { 23 } } { 235 }$

* Energy = $\frac { 6.023 \times 10 ^ { 23 } } { 235 } \times 200$ MeV