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physics ncert solutions class 11th Physics Class 11th Mechanical Properties of Solids

9.2 Figure 9.11 shows the strain-stress curve for a given material. What are (a) Young’s modulus and (b) approximate yield strength for this material?

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Vishal Baghel | Contributor-Level 10

5 months ago

From the given graph, for the value stress 150 $* 10^{6}$ N/ $m^{2}$ , the strain is 0.002

Young's modulus = $\frac{150 * 10^{6}}{0.002}$ = 7.5 $* 10^{10}$ N/ $m^{2}$

Yield strength is the maxium strength the material can withstand in elastic limit. From the graph, the yield strength is 300 $* 10^{6}$ or 3 $* 10^{8} N / m^{2}$

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9.2 Figure 9.11 shows the strain-stress curve for a given material. What are (a) Young’s modulus and (b) approximate yield strength for this material?

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