Stress and strain

Which of these cannot undergo deformation?

• A piece of wood

• Orange juice

• Rigid body

• Hydrogen gas

Deformation is a matter ___ under the action of an external force.

Stress has the same unit as ...

• Sound intensity

• Work

• Pressure

• Strain

For the same amount of force applied, what is the stress on a given object if the surface area is halved?

• half the original

• remain unchanged

• twice the original

Which type of stress and strain will be covered in our syllabus?

• Tensile and compressive

• Bulk

• Shear

Stretching occurs when ___ force is applied onto an object.

• compressive

• tensile

• radial

• explosive

The force that is applied on an object must be applied ___ to the surface of the object.

• parallel

• perpendicular

• at an angle θ

True or False: If an object have a large number of strain, it is a strong material.

• True

• False

True or False: Plastic deformation occurs when a material behaves within its elastic limit.

• True

• False

True or False: Strain is the fractional change in the dimensions of the object with unit of N⁻¹.

• True

• False