Which defect does the following figure depict?
(a) Vacancy defect
(b) Schottky defect
(c) Frankel defect
(d) Interstitial defect
This question was addressed to me in an online quiz.
This question is from Crystal Defects in chapter Imperfection in Metal Crystals, Fracture, Corrosion and Oxidation of Engineering Material & Metallurgy