Question:
: Bulk modulus if elasticity (K) represents incompressibility of the material.
: Bulk modulus of elasticity is proportional to change in pressure.
: Bulk modulus if elasticity (K) represents incompressibility of the material.
: Bulk modulus of elasticity is proportional to change in pressure.
Updated On: Jul 6, 2022
- If both assertion and reason are true and the reason is the correct explanation of the assertion
- If both assertion and reason are true but reason is not the correct explanation of the assertion.
- If assertion is true but reason is false
- If assertion and reason both are false
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The Correct Option is A
Solution and Explanation
Bulk modulus of elasticity measures how good the body is to regain its original volume on being compressed. Therefore, it represents incompressibility of the material. $K =\frac{- PV }{\Delta V }$ where $P$ is increase in pressure, $\Delta V$ is change in volume.
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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.