SELF EVALUATION TEST
Ashok Sharma Physics Solutions for Exercise - SELF EVALUATION TEST
Simple step-by-step solutions to SELF EVALUATION TEST questions of Mechanical Properties of Solids from Super Refresher Physics 11. Also get 3D topic explainers, cheat sheets, and unlimited doubts solving on EMBIBE.
Questions from SELF EVALUATION TEST with Hints & Solutions
Two wires of different materials are suspended from a rigid support. They have same length and diameter and carry the same load at the free ends. Will extension, strain and stress be different?
Elasticity has different meaning in physics and in our daily life. Comment.
A wire stretches by a certain amount under a load. If the load and radius both increased to four times, find the stretch caused in the wire.
Steel is more elastic than rubber. Explain why?
Define elasticity. When a body is called elastic and when is it called plastic? Explain elastic limit.
Draw stress strain curve for a loaded steel wire and hence define the term permanent set, elastic limit, yield point and tensile strength.
Define young’s modulus of elasticity, normal stress and longitudinal strain. Give unit of each of them. Derive an expression for the elastic potential energy of a wire, when stretched.
Derive an expression for the elastic potential energy stored in a stretched wire under stress. Define the terms elastic after effect and elastic fatigue.
