cse • paper_2 • nuclear_particlecse-2007-subject-07-004
Nuclear Physics — UPSC CSE 2007 Physics PYQ
Buy PYQ Solution Manual →A star converts all its hydrogen to helium, achieving 100% helium composition. It then converts the helium to carbon via the reaction {}^{4}_{2}\text{He} + \text{He} \rightarrow {}^{12}_{6}\text{C} + 7.27\text{ MeV} The mass of the star is 5 \times 10^{32}\text{ kg} and it generates energy at the rate of 5 \times 10^{30}\text{ W}. How long will it take to convert all helium to carbon at this rate ?
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