When an external force is applied on the body there is a deformation in it's shape. The deformation in the shape is due to relative change in the position of atoms or molecules. This relative change in the position causes the attractive or repulsive interatomic or intermolecular forces to set up in the solid which is called restoring force. This restoring force is the origin of stress. The restoring force per unit area is called stress.
Tips: -
162 Views
Advertisement
What is yield point and why it is so named?
Plot the graph between intermolecular forces. What is the range of these forces?
Amorphous substances do not have sharp melting point but get softening range before melting, while crystalline substances have sharp melting point. Explain.
