JEE Main 2026 · 6 Apr · Shift 2 · Physics Q41

PhysicsSingle correct+4 / -1Question 41 of 75

The energy released if hydrogen atoms are combined to form $^4_2\mathrm{He}$ is ________ MeV.

(Take binding energies per nucleon of $^2_1\mathrm H$ and $^4_2\mathrm{He}$ as 1.1 MeV and 7.2 MeV, respectively)

6.1

24.4

26.6

Answer and worked solution

Official answer: B

Fusion of two deuterons.
$E=4(7.2)-2\cdot2(1.1)=28.8-4.4=24.4\text{ MeV}.$

(B)

JEE Main 2026 · 6 Apr · Shift 2, Physics question 41