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A screw dislocation
1. Lies parallel to its Burger's vector
2. Lies perpendicular to its Burger's vector
3. Moves in a perpendicular direction to the Burger's vector
4. Moves in an inclined direction to the Burger's vector
Select the correct answer using the codes given below:
Codes:
1. Lies parallel to its Burger's vector
2. Lies perpendicular to its Burger's vector
3. Moves in a perpendicular direction to the Burger's vector
4. Moves in an inclined direction to the Burger's vector
Select the correct answer using the codes given below:
Codes:
- a)1 and 4
- b)1 and 3
- c)2 and 3
- d)2 and 4
Correct answer is option 'B'. Can you explain this answer?
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Verified Answer
A screw dislocation1. Lies parallel to its Burger's vector2. Lies ...
Ans. (b)
Most Upvoted Answer
A screw dislocation1. Lies parallel to its Burger's vector2. Lies ...
Explanation:
A screw dislocation is a type of crystal defect that occurs when one part of a crystal lattice is displaced in a shear motion with respect to the other part. It is characterized by a linear defect line, known as the dislocation line, along which the atoms of the crystal lattice are misaligned.
Burgers Vector:
The Burgers vector is a vector that represents the magnitude and direction of the lattice distortion caused by a dislocation. It is defined as the vector that is drawn from the position of an atom in the perfect crystal lattice to the position of the same atom in the presence of a dislocation.
Lies parallel to its Burgers vector:
When a screw dislocation occurs, the dislocation line is parallel to the Burgers vector. This means that the direction of the dislocation line and the direction of the Burgers vector are the same.
Lies perpendicular to its Burgers vector:
This statement is incorrect. A screw dislocation does not lie perpendicular to its Burgers vector. The dislocation line and the Burgers vector are parallel, not perpendicular.
Moves in a perpendicular direction to the Burgers vector:
This statement is incorrect. A screw dislocation does not move in a perpendicular direction to the Burgers vector. The motion of a screw dislocation is along the dislocation line, which is parallel to the Burgers vector.
Moves in an inclined direction to the Burgers vector:
When a screw dislocation moves, it moves in an inclined direction to the Burgers vector. This means that the motion of the dislocation is not perfectly parallel to the Burgers vector but is inclined or oblique to it.
Correct answer:
The correct answer is option B, which states that a screw dislocation lies parallel to its Burgers vector and moves in a perpendicular direction to the Burgers vector.
A screw dislocation is a type of crystal defect that occurs when one part of a crystal lattice is displaced in a shear motion with respect to the other part. It is characterized by a linear defect line, known as the dislocation line, along which the atoms of the crystal lattice are misaligned.
Burgers Vector:
The Burgers vector is a vector that represents the magnitude and direction of the lattice distortion caused by a dislocation. It is defined as the vector that is drawn from the position of an atom in the perfect crystal lattice to the position of the same atom in the presence of a dislocation.
Lies parallel to its Burgers vector:
When a screw dislocation occurs, the dislocation line is parallel to the Burgers vector. This means that the direction of the dislocation line and the direction of the Burgers vector are the same.
Lies perpendicular to its Burgers vector:
This statement is incorrect. A screw dislocation does not lie perpendicular to its Burgers vector. The dislocation line and the Burgers vector are parallel, not perpendicular.
Moves in a perpendicular direction to the Burgers vector:
This statement is incorrect. A screw dislocation does not move in a perpendicular direction to the Burgers vector. The motion of a screw dislocation is along the dislocation line, which is parallel to the Burgers vector.
Moves in an inclined direction to the Burgers vector:
When a screw dislocation moves, it moves in an inclined direction to the Burgers vector. This means that the motion of the dislocation is not perfectly parallel to the Burgers vector but is inclined or oblique to it.
Correct answer:
The correct answer is option B, which states that a screw dislocation lies parallel to its Burgers vector and moves in a perpendicular direction to the Burgers vector.
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A screw dislocation1. Lies parallel to its Burger's vector2. Lies perpendicular to its Burger's vector3. Moves in a perpendicular direction to the Burger's vector4. Moves in an inclined direction to the Burger's vectorSelect the correct answer using the codes given below:Codes:a)1 and 4b)1 and 3c)2 and 3d)2 and 4Correct answer is option 'B'. Can you explain this answer?
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