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Class 11 Exam  >  Class 11 Questions  >  Putty or mud is an example ofa)semi elasticb)... Start Learning for Free
Putty or mud is an example of
  • a)
    semi elastic
  • b)
    plastic material
  • c)
    elastomers
  • d)
    elastic material
Correct answer is option 'B'. Can you explain this answer?
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Verified Answer
Putty or mud is an example ofa)semi elasticb)plastic materialc)elastom...
Since mud or putty have no gross tendency to regain their previous shape & they get permanently deformed, they are close to ideal plastics.
  1. Perfectly plastic bodies are those that retain their distorted shape or size after external pressures applied to them have been released.
  2. Partially elastic bodies are those that partially return to their former shape or size when external forces are eliminated.
  3. The shape or size of mud or putty is now altered when force is applied, and the body does not return to its original state when the force is removed. Only perfectly plastic bodies, as already established, exhibit this feature.
  4. Additionally, many elasticity moduli types are used to measure elasticity.
  5. The ratio of stress to strain given to a body under various variations in dimension is what makes up an elastic modulus.
  6. Young's Modulus, Shear Modulus, and Bulk Modulus are the three forms of elastic moduli. Since Young's modulus or longitudinal stress by strain for mud or putty is almost zero, they are theoretically proven to be almost ideal plastic bodies.
Hence, putty or mud is an example of a perfectly plastic body.
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Most Upvoted Answer
Putty or mud is an example ofa)semi elasticb)plastic materialc)elastom...
Since mud or putty have no gross tendency to regain their previous shape & they get permanently deformed, they are close to ideal plastics.
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Putty or mud is an example ofa)semi elasticb)plastic materialc)elastom...
Explanation:
Putty or mud is an example of a plastic material.

Plastic Material:
Plastic materials are substances that can be easily molded or shaped into different forms. They have the ability to undergo permanent deformation when a force is applied to them. Unlike elastic materials, plastic materials do not return to their original shape once the force is removed. Instead, they retain the new shape that has been given to them.

Properties of Plastic Materials:
Plastic materials possess the following properties:

1. Deformation: Plastic materials can be easily deformed or reshaped under the influence of a force. This is due to the ability of their molecular chains to slide past each other and rearrange.

2. Permanent Deformation: Plastic materials retain the new shape that has been given to them even after the force is removed. This is because the molecules in the material have been rearranged and locked into the new configuration.

3. Low Elasticity: Plastic materials have a low elastic modulus, which means they have a low resistance to deformation. They do not exhibit significant elastic behavior and do not return to their original shape after deformation.

4. Malleability and Ductility: Plastic materials can be easily molded into different shapes without breaking or cracking. They can be stretched or compressed without undergoing fracture.

5. Permanent Set: Plastic materials may exhibit a phenomenon called permanent set, where they retain a certain amount of deformation even after the force is removed. This is due to the rearrangement of molecular chains and the formation of new bonds.

Putty or Mud:
Putty or mud is a type of plastic material that can be easily molded and shaped. It is commonly used in construction, woodworking, and automotive industries for filling cracks, gaps, and imperfections. Putty or mud is composed of a mixture of materials such as clay, plaster, cement, or epoxy, which provide the desired plasticity and workability. Once applied, it can be shaped and smoothed to achieve the desired finish. The putty or mud retains its new shape and hardens over time, providing a durable and robust surface.

In conclusion, putty or mud is an example of a plastic material due to its ability to be easily molded, retain its new shape, and undergo permanent deformation.
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Attempt All Questions sub parts from each question.Elasticity vs. plasticity: Objects get deformed when pushed, pulled, and twisted. Elasticity is the measure of the amount that the object can return to its original shape after these external forces and pressure are removed. The opposite of elasticity is plasticity. When something is stretched, and it stays stretched, the material is said to be plastic. Such deformation is said to be plastic deformation. In elastic deformation, atoms of the material are displaced temporarily from their original lattice site. They return back to their original position after the removal of external force. In plastic deformation, atoms of the solid are displaced permanently from their original lattice site. They don’t return back to the original position even after the removal of external load. So, elastic deformation is temporary, whereas plastic deformation is permanent. Amount of elastic deformation is very small. But the amount of plastic deformation is quite large. External force required for elastic deformation of solid is quite small. Force required for plastic deformation is much higher. Total energy absorbed by the material during elastic and plastic deformation region is called modulus of toughness. Energy absorbed by the material during elastic deformation is called module of resilience. Most materials have an amount of force or pressure for which they deform elastically. If more force or pressure is applied, then they undergo plastic deformation. Materials those have a fair amount of plastic deformation before breaking are said to be ductile. Materials those can't stretch or bend much without breaking are said to be brittle. Copper, aluminium etc. are ductile materials. For this reason those are used for making wires. Glass and ceramics are often brittle; they will not bend; they will break.Q. Which of the following statement is false?

Attempt All Questions sub parts from each question.Elasticity vs. plasticity: Objects get deformed when pushed, pulled, and twisted. Elasticity is the measure of the amount that the object can return to its original shape after these external forces and pressure are removed. The opposite of elasticity is plasticity. When something is stretched, and it stays stretched, the material is said to be plastic. Such deformation is said to be plastic deformation. In elastic deformation, atoms of the material are displaced temporarily from their original lattice site. They return back to their original position after the removal of external force. In plastic deformation, atoms of the solid are displaced permanently from their original lattice site. They don’t return back to the original position even after the removal of external load. So, elastic deformation is temporary, whereas plastic deformation is permanent. Amount of elastic deformation is very small. But the amount of plastic deformation is quite large. External force required for elastic deformation of solid is quite small. Force required for plastic deformation is much higher. Total energy absorbed by the material during elastic and plastic deformation region is called modulus of toughness. Energy absorbed by the material during elastic deformation is called module of resilience. Most materials have an amount of force or pressure for which they deform elastically. If more force or pressure is applied, then they undergo plastic deformation. Materials those have a fair amount of plastic deformation before breaking are said to be ductile. Materials those can't stretch or bend much without breaking are said to be brittle. Copper, aluminium etc. are ductile materials. For this reason those are used for making wires. Glass and ceramics are often brittle; they will not bend; they will break.Q. Hooks law is applicable for

Attempt All Questions sub parts from each question.Elasticity vs. plasticity: Objects get deformed when pushed, pulled, and twisted. Elasticity is the measure of the amount that the object can return to its original shape after these external forces and pressure are removed. The opposite of elasticity is plasticity. When something is stretched, and it stays stretched, the material is said to be plastic. Such deformation is said to be plastic deformation. In elastic deformation, atoms of the material are displaced temporarily from their original lattice site. They return back to their original position after the removal of external force. In plastic deformation, atoms of the solid are displaced permanently from their original lattice site. They don’t return back to the original position even after the removal of external load. So, elastic deformation is temporary, whereas plastic deformation is permanent. Amount of elastic deformation is very small. But the amount of plastic deformation is quite large. External force required for elastic deformation of solid is quite small. Force required for plastic deformation is much higher. Total energy absorbed by the material during elastic and plastic deformation region is called modulus of toughness. Energy absorbed by the material during elastic deformation is called module of resilience. Most materials have an amount of force or pressure for which they deform elastically. If more force or pressure is applied, then they undergo plastic deformation. Materials those have a fair amount of plastic deformation before breaking are said to be ductile. Materials those can't stretch or bend much without breaking are said to be brittle. Copper, aluminium etc. are ductile materials. For this reason those are used for making wires. Glass and ceramics are often brittle; they will not bend; they will break.Q. Aluminium is a ............... materials.

Attempt All Questions sub parts from each question.Elasticity vs. plasticity: Objects get deformed when pushed, pulled, and twisted. Elasticity is the measure of the amount that the object can return to its original shape after these external forces and pressure are removed. The opposite of elasticity is plasticity. When something is stretched, and it stays stretched, the material is said to be plastic. Such deformation is said to be plastic deformation. In elastic deformation, atoms of the material are displaced temporarily from their original lattice site. They return back to their original position after the removal of external force. In plastic deformation, atoms of the solid are displaced permanently from their original lattice site. They don’t return back to the original position even after the removal of external load. So, elastic deformation is temporary, whereas plastic deformation is permanent. Amount of elastic deformation is very small. But the amount of plastic deformation is quite large. External force required for elastic deformation of solid is quite small. Force required for plastic deformation is much higher. Total energy absorbed by the material during elastic and plastic deformation region is called modulus of toughness. Energy absorbed by the material during elastic deformation is called module of resilience. Most materials have an amount of force or pressure for which they deform elastically. If more force or pressure is applied, then they undergo plastic deformation. Materials those have a fair amount of plastic deformation before breaking are said to be ductile. Materials those can't stretch or bend much without breaking are said to be brittle. Copper, aluminium etc. are ductile materials. For this reason those are used for making wires. Glass and ceramics are often brittle; they will not bend; they will break.Q. Ceramic is a ............... material

Attempt All Questions sub parts from each question.Elasticity vs. plasticity: Objects get deformed when pushed, pulled, and twisted. Elasticity is the measure of the amount that the object can return to its original shape after these external forces and pressure are removed. The opposite of elasticity is plasticity. When something is stretched, and it stays stretched, the material is said to be plastic. Such deformation is said to be plastic deformation. In elastic deformation, atoms of the material are displaced temporarily from their original lattice site. They return back to their original position after the removal of external force. In plastic deformation, atoms of the solid are displaced permanently from their original lattice site. They don’t return back to the original position even after the removal of external load. So, elastic deformation is temporary, whereas plastic deformation is permanent. Amount of elastic deformation is very small. But the amount of plastic deformation is quite large. External force required for elastic deformation of solid is quite small. Force required for plastic deformation is much higher. Total energy absorbed by the material during elastic and plastic deformation region is called modulus of toughness. Energy absorbed by the material during elastic deformation is called module of resilience. Most materials have an amount of force or pressure for which they deform elastically. If more force or pressure is applied, then they undergo plastic deformation. Materials those have a fair amount of plastic deformation before breaking are said to be ductile. Materials those cant stretch or bend much without breaking are said to be brittle. Copper, aluminium etc. are ductile materials. For this reason those are used for making wires. Glass and ceramics are often brittle; they will not bend; they will break.Q. Which of the following 4 stress-strain graphs represent a ductile material and a brittle material?

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Putty or mud is an example ofa)semi elasticb)plastic materialc)elastomersd)elastic materialCorrect answer is option 'B'. Can you explain this answer?
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