Engineering Physics

Review Questions

1. What are ionic crystals? Explain the formation of an ionic crystal and obtain an expression for its cohesive energy.

    

   (Set-4–June 2005)

2. Explain the forces between two interacting atoms when they are brought nearer to form a molecule.

    

   (Set-1–May 2008), (Set-2–May 2006), (Set-1–May 2004), (Set-2–Nov. 2004), (Set-1–May 2003)

3. Derive an expression for the equilibrium spacing of two atoms for which the potential energy is minimum and hence obtain the dissociation energy.

    

   (Set-1–May 2008), (Set-2–May 2006), (Set-1–May 2004), (Set-2–Nov. 2004), (Set-1–May 2003)

4. Plot and explain the variation of: (i) attractive potential energy (ii) repulsive potential energy and (iii) resultant potential energy with interatomic distance, when two ...