JEE Main 2024 · PhysicsMultiple choiceSingle correctMediumMulti-step

JEE Main 9 April 2024, Shift 2, Physics Q37

Question 37 of 90 in this shift, Physics question 7 of 30, Section A.

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

^{235}\mathrm{U}

E_U

. The ratio

\frac{E_H}{E_U}

is approximately: (Consider the fusion reaction as

4\,{}_1^1H+2e^-\to{}_2^4He+2\nu+6\gamma+26.7

MeV, energy released in the fission reaction of

^{235}\mathrm{U}

200

MeV per fission nucleus and

N_A=6.023\times10^{23}

)

(1) $7.62$ Official answer
(2) $9.13$
(3) $25.6$
(4) $15.04$

Official answer

Option 1

NTA final key.

Chapter: Nuclei
Topic: Fission and Fusion
Idea tested: Energy Density Comparison

Same topic in other shifts

All Fission and Fusion questions

Question text from the official JEE Main paper published by NTA; answer from the final answer key. Chapter, topic and idea tags, difficulty and skill are Lumi’s. Lumi analyses 42 of the 174 JEE Main shifts held from 2017 to 2026.