Weizsäcker mass formula (Question 1 (20 Marks)) — UPSC Physics Optional CSE 2004 Paper II

(i) Write the Weizsacker mass formula and explain the significance of various terms. (ii) Determine the amount of {}_{84}^{210}\text{Po} necessary to provide a source of \alpha-particles of strength 5\text{ mC}_i. The half-life of {}_{84}^{210}\text{Po} is 138\text{ d}.