Q18. The energy released in the fusion of 2 kg of hydrogen deep in the sun is $E _ { H }$ and the energy released in the fission of 2 kg of ${ } ^ { 235 } \mathrm { U }$ is $E _ { U }$. The ratio $\frac { E _ { H } } { E _ { U } }$ is approximately: (Consider the fusion reaction as $4 \mid H + 2 \mathrm { e } ^ { - } \rightarrow { } _ { 2 } ^ { 4 } \mathrm { He } + 2 v + 6 \gamma + 26.7 \mathrm { MeV }$, energy released in the fission reaction of ${ } ^ { 235 } \mathrm { U }$ is 200 MeV per fission nucleus and $\mathrm { N } _ { \mathrm { A } } = 6.023 \times 10 ^ { 23 }$ ) (1) 7.62 (2) 25.6 (3) 15.04 (4) 9.13
Q18. The energy released in the fusion of 2 kg of hydrogen deep in the sun is $E _ { H }$ and the energy released in the fission of 2 kg of ${ } ^ { 235 } \mathrm { U }$ is $E _ { U }$. The ratio $\frac { E _ { H } } { E _ { U } }$ is approximately: (Consider the fusion reaction as $4 \mid H + 2 \mathrm { e } ^ { - } \rightarrow { } _ { 2 } ^ { 4 } \mathrm { He } + 2 v + 6 \gamma + 26.7 \mathrm { MeV }$, energy released in the fission reaction of ${ } ^ { 235 } \mathrm { U }$ is 200 MeV per fission nucleus and $\mathrm { N } _ { \mathrm { A } } = 6.023 \times 10 ^ { 23 }$ )\\
(1) 7.62\\
(2) 25.6\\
(3) 15.04\\
(4) 9.13