Essential Digital Skills, Module-1 - Practice Mode
4) Krish made a typing mistake and wants to go back to the previous sentence. Which option should he use?
Correct Answer: Undo
Explanation:
Toughness:
When a huge external force is applied on a metal, the metal will experience fracture. Toughness is the ability of a metal to resist fracture. The ability of a material to resist fracture due to high impact loads, is called toughness.
Brittleness
Brittleness is a property of material which breaks with little or no deformation.
Stiffness:
When an external force is applied on a metal, it develops an internal resistance. The internal resistance developed per unit area is called stress. Stiffness is the ability of a metal to resist deformation under stress.
Hardness:
Hardness is the ability of a metal to resist permanent change of shape caused by an external force.