WorksheetsChapter 11: Deformation of solid
Total questions: 20
Worksheet time: 36mins
What is the correct unit for strain?
Pa
Nm-2
No unit
Nm2
Select all the correct units for stress.
Pa
Nm-2
Nm2
No unit
The Young's Modulus is defined as...
The gradient of a stress strain graph
The energy required to stretch a material.
Stress/Strain
Force/Extension.
Hooke's law states that
the extension is proportional to the load when the elastic limit is not exceeded
the extension is inversely proportional to the load when the elastic limit is not exceeded
the extension is independent of the load when the elastic limit is not exceeded
load is dependent on extension
At ‘yield point’ of a copper wire
the load hasn't exceeded the elastic limit yet; so, Hooke's law applies
the load has already exceeded the elastic limit and the material has become plastic
even the plastic stage has passed and the wire has snapped already
Like Brass and Bronze, Copper has no yield point
Substances that elongate considerably and undergo plastic deformation before they break are known as
brittle material
ductile material
stiff material
plastic material
Hooke's law holds good up to
elastic limit
breaking point
yield point
proportionality limit
X- Glass, Y- Copper, Z- Rubber
X- Glass, Y- Rubber, Z- Copper
X- Rubber, Y- Copper, Z- Glass
X- Rubber, Y- Glass, Z- Copper
The unit of Young’s modulus of elasticity is:
pascals
metres
dimension-less
newtons
Which letter is pointing to the elastic limit?
A
B
C
D
Which letter is pointing to where the material will break?
A
B
C
D
The units for elastic potential energy are...
Joules, J
metres, m
centimetres, cm
kilograms, kg
What is the correct unit for strain?
Pa
Nm-2
No unit
Nm2
How do you calculate elastic potential energy or work done by a spring? (Select all that apply)
W = ½Fx
W = ½kx²
W = Fx
W = ½Fx²
A region that starts from upper yield point is called
Elastic region
Hooke's Law region
Plastic region
None of the above
What happen to the planes of atoms during upper yield point?
Atom breaks
Atom stay intact
Planes of atoms starts sliding upon each other
None of the above
What is the process when stress causes a material to strain, but afterward the material returns to its original shape?
Stress
Strain
Elastic Deformation
Plastic Deformation
Fault
Which letter points to the section that shows elastic deformation?
A
B
C
D
This refers to the ratio of tensile stress to tensile strain.
Bulk Modulus of elasticity
Shear Modulus of Rigidity
Young's Modulus of elasticity
