Which of the following point defects are shown by AgBr(s) crystals ?
1. Schottky defect
2. Frenkel defect
3. Metal excess defect
4. Metal deficiency defect
(a) 1 and 2 (b) 3 and 4 (c) 1 and 3 (d) 2 and 4
Cations are present in the interstitial sites in ...........
(a) Frenkel defect (b) Schottky defect
(c) vacancy defect (d) metal deficiency defect
Which kind of defects are introduced by doping?
(a) Dislocation defect (b) Schottky defect
(c) Frenkel defect (d) Electronic defect