Question:
Stress is the internal force per unit area of a body.
Rubber is more elastic than steel.
Stress is the internal force per unit area of a body.
Rubber is more elastic than steel.
Updated On: Jul 28, 2022
- If both the assertion and reason are true and reason is a correct explanation of the assertion
- If both assertion and reason are true but assertion is not a correct explanation of the assertion
- If the assertion is true but the reason is false
- If both assertion and reason are false
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The Correct Option is C
Solution and Explanation
Stress is the internal force per unit area of a body. If the same force is applied to the rubber and steel, then strain in rubber is more. It means the rubber is more elastic than steel.
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Concepts Used:
Mechanical Properties of Solids
Mechanical properties of solids intricate the characteristics such as the resistance to deformation and their strength. Strength is the ability of an object to resist the applied stress, to what extent can it bear the stress.
Therefore, some of the mechanical properties of solids involve:
- Elasticity: When an object is stretched, it changes its shape and when we leave, it retrieves its shape. Or we can say it is the property of retrieving the original shape once the external force is removed. For example Spring
- Plasticity: When an object changes its shape and never attains its original shape even when an external force is removed. It is the permanent deformation property. For example Plastic materials.
- Ductility: When an object is been pulled in thin sheets, wires or plates, it will be assumed that it has ductile properties. It is the property of drawing into thin wires/sheets/plates. For example Gold or Silver
- Strength: The ability to hold out applied stress without failure. Many types of objects have higher strength than others.