Dislocations in materials refer to the following type of defect

A. Point defect

B. Line defect

C. Plane defect

D. Volumetric defect

Answer: Option B

Solution(By Examveda Team)

Dislocations in materials refer to Line defect.
Line defects are lines along which whole rows of atoms in a solid are arranged anomalously.
The resulting irregularity in spacing is most severe along a line called the line of dislocation.
Line defects can weaken or strengthen solids.