The mechanical properties of solids describe how solid materials behave when external forces are applied to them.
When a force acts on a solid body, it may change its shape, size or both. The study of these changes is called mechanical properties of solids.
Many solids regain their original shape and size after the removal of the applied force. This property is called elasticity.
Some solids do not regain their original shape after the removal of force. Such behaviour is called plasticity.
Q1. Mechanical properties of solids deal with: A) Motion of solids B) Electrical behaviour C) Effect of force on solids D) Heat transfer Answer: C Q2. Elasticity is the property of a material to: A) Break easily B) Conduct electricity C) Regain original shape after deformation D) Change colour Answer: C Q3. Plasticity refers to: A) Complete recovery of shape B) No deformation C) Permanent deformation D) Temporary deformation Answer: C Q4. Which of the following shows elastic behaviour? A) Clay B) Rubber band C) Wet soil D) Putty Answer: B Q5. Study of mechanical properties is important in: A) Cooking B) Painting C) Construction and engineering D) Photography Answer: C
Study of behaviour of solids under applied force.
Property of a material to regain original shape after removal of force.
Property of a material to undergo permanent deformation.
Direct MCQs are asked on definitions of elasticity, plasticity and applications.
