(a(i))[1]
State the name of the nuclear reaction shown.
(a(ii))[3]
Show that the energy released when one helium-4 nucleus is produced from deuterium is $3.47 \times 10^{-12}\,\text{J}$.
(b)
A star has a radius of $6.96 \times 10^{8}\,\text{m}$. Within this star, helium-4 is generated from deuterium at a mass rate of $7.34 \times 10^{11}\,\text{kg s}^{-1}$. Every bit of the energy released by this process is radiated away from the star. The star’s radiated energy comes entirely from this process.
(b(i))[3]
Calculate the star’s luminosity.
(b(ii))[2]
Use your answer from (b)(i) to find the surface temperature of the star.