Question

Burger's vector is perpendicular to

• A. Edge dislocation
• B. Screw dislocation
• C. Frenkel defect
• D. Schottky defect

Hint:

For edge dislocation, Burger's vector is perpendicular to the dislocation line; for screw dislocation, it is parallel.

Answer 1

The Correct Option is A

Concept: Burger's vector describes the magnitude and direction of lattice distortion due to dislocation.

Step 1: In an edge dislocation, Burger's vector is perpendicular to the dislocation line.

Step 2: In a screw dislocation, Burger's vector is parallel to the dislocation line.

Step 3: Frenkel and Schottky defects are point defects, not line dislocations.

Step 4: Therefore, Burger's vector is perpendicular in the case of edge dislocation. Hence: \[ \boxed{\text{Edge dislocation}} \]