At Saralstudy, we are providing you with the solution of Class 11 Physics Mechanical Properties of Solids according to the latest NCERT (CBSE) Book guidelines prepared by expert teachers. Here we are trying to give you a detailed answer to the questions of the entire topic of this chapter so that you can get more marks in your examinations by preparing the answers based on this lesson. We are trying our best to give you detailed answers to all the questions of all the topics of Class 11 Physics Mechanical Properties of Solids so that you can prepare for the exam according to your own pace and your speed.
(a) False (b) True
(a) For a given stress, the strain in rubber is more than it is in steel.
Young’s modulus, Y = stress / strain
For a constant stress: Y ∝ 1 / strain
Hence, Young’s modulus for rubber is less than it is for steel.
(b) Shear modulus is the ratio of the applied stress to the change in the shape of a body. The stretching of a coil changes its shape. Hence, shear modulus of elasticity is involved in this process.