Quiz Number 1 - Physics - Dr. Wael Mortada
Cubic Lattice Physics Quiz
Test your knowledge of physics concepts related to crystal structures and material properties with this engaging quiz. Ideal for students, educators, and anyone interested in the fascinating world of materials science.
- 24 questions covering various topics in physics.
- Multiple choice format for easy answering.
- Immediate feedback on your answers.
In any cubic lattice an atom lying at the corner of a unit cell is shared equally by how many unit cells?
1
2
6
8
A lattice is
A crystal structure
A unit cell
Ordered array of points
Centered atom
The fundamental grouping of particles in a crystal is called
A unit cell
A crystal structure
Bravias lattice
Lattice point
The number of equidistant nearest neighbors that an atom has in a structure is called
Nearest neighbor distance
Atomic packing factor
Coordination number
Lattice point
In a body-centered cubic lattice how many atoms are contained in a unit cell
1
2
4
8
In which of the following structures the effective number of atoms per unit cell is one third of its coordination number
SC
BCC
FCC
Coordination number of BCC structure is
2
4
8
12
Atomic packing factor is
Distance between two atoms
Projected area fraction of atoms
Volume faction of atoms in cell
Aluminum metal crystallizes in a cubic close-packed structure face-centered cubic cell. How many aluminum atoms are in a unit cell?
1
2
4
6
Which structure achieve the highest density of packing?
SC
BCC
FCC
Which of the following central atoms have coordination number 8?
A
B
C
D
Which of the following is a pulling force?
Orthodontic extrusion
Orthodontic intrusion
Masticatory force
Orthodontic tipping
Effective force is obtained when
Arm of force = Arm of resistance
Resistance arm > force arm
Force arm > resistance arm
The force per unit area is termed as
Stress force
Stress
Strain
Elastic modulus
لإhe tendency of an object to deform in all directions is defined by
Young modulus
Shear modulus
Bulk modulus
Which of the following is not true for elastic deformation
The material return to its original state when the applied force is removed
The deformation is reversible
The bonds between atoms are stretched only
Some bonds between atoms are broken and new bonds are formed
Before yield point
The material deforms elastically
The material deforms plastically
The material undergo breaking
The material undergo fatigue
The maximum amount of energy that can be absorbed within the elastic limit without plastic deformation is called
Ultimate strength
Breaking strength
Toughness
Resilience
In stress-strain curve for an elastic material, ultimate strength is always larger than breaking strength
True
False
In ductile fracture
The material resist the applied stress by large plastic deformation before breaking
The material absorb little energy before fracture
A high force applied over a short time period
The material is subjected to a constant load for a long period
Each material has its characteristic stress-strain curve
True
False
Applying a lower force over longer period has a greater effect than applying a high force over a short time period.
True
False
The electric conductance of a semi-conductor depend on the addition of other atoms
True
False
The complete area under the stress-strain curve
Resilience
Toughness
Brittleness
Stress
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