Physics Elasticity Question 118
Question: In steel, the Young’s modulus and the strain at the breaking point are $ 2\times 10^{11},N{{m}^{-2}} $ and 0.15 respectively. The stress at the breaking point for steel is therefore
[MP PET 1990; MP PMT 1992; DPMT 2001]
Options:
A) $ 1.33\times 10^{11},N{{m}^{-2}} $
B) $ 1.33\times 10^{12},N{{m}^{-2}} $
C) $ 7.5\times {{10}^{-13}},N{{m}^{-2}} $
D) $ 3\times 10^{10},N{{m}^{-2}} $
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Answer:
Correct Answer: D
Solution:
Breaking stress = strain × Young’s modulus $ =0.15\times 2{{\times }^{11}}=3\times 10^{10}\ N{{m}^{-2}} $
BETA
