bro jaldi

2. (a) A solid is held at high temperature until equilibrium is attained. Its surface displays grooves, as shown below. (5 Marks) i. Write an expression for the relationships between the grain boundary energy of 1 and 2 ii. Which grain boundary has the largest energy, 1/2 or 2/3 ? iii. If ij goes to , what is the value of the grain boundary energy? iv. If ij goes to 0 , what is the value of the grain boundary energy