369874
Two similar wires under the same load yield elongation of \(1.0\;\,mm\) and \(0.05\;\,mm\) respectively. If the area of cross-section of the first wire is \(4\;m{m^2}\) then the area of cross section of the second wire is
369875
A wire is stretched \(1\;\,mm\) by a force of \(1\,KN\). How far would a wire of the same material and length but of four times that diameter be stretched by the same force.
369876
Assertion : Lead is more elastic than rubber. Reason : If the same load is attached to lead and rubber wires of the same cross-sectional area lead has less strain (compared to rubber).
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but reason is correct.
Explanation:
\(Y=\dfrac{\text { Stress }}{\left(\Delta l / l_{0}\right)}\) For lead, \(Y = 16\,GPa\) For rubber, \(Y = 0.1\,GPa\). More the value of \(Y\), more elastic is material.Lead is more elastic than rubber in the sense that it undergoes less strain \(\left(=\Delta l / l_{0}\right)\) when subjected to the same stress. So correct option is (1).
PHXI09:MECHANICAL PROPERTIES OF SOLIDS
369877
Young's modulus of perfectly rigid body material is
369874
Two similar wires under the same load yield elongation of \(1.0\;\,mm\) and \(0.05\;\,mm\) respectively. If the area of cross-section of the first wire is \(4\;m{m^2}\) then the area of cross section of the second wire is
369875
A wire is stretched \(1\;\,mm\) by a force of \(1\,KN\). How far would a wire of the same material and length but of four times that diameter be stretched by the same force.
369876
Assertion : Lead is more elastic than rubber. Reason : If the same load is attached to lead and rubber wires of the same cross-sectional area lead has less strain (compared to rubber).
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but reason is correct.
Explanation:
\(Y=\dfrac{\text { Stress }}{\left(\Delta l / l_{0}\right)}\) For lead, \(Y = 16\,GPa\) For rubber, \(Y = 0.1\,GPa\). More the value of \(Y\), more elastic is material.Lead is more elastic than rubber in the sense that it undergoes less strain \(\left(=\Delta l / l_{0}\right)\) when subjected to the same stress. So correct option is (1).
PHXI09:MECHANICAL PROPERTIES OF SOLIDS
369877
Young's modulus of perfectly rigid body material is
369874
Two similar wires under the same load yield elongation of \(1.0\;\,mm\) and \(0.05\;\,mm\) respectively. If the area of cross-section of the first wire is \(4\;m{m^2}\) then the area of cross section of the second wire is
369875
A wire is stretched \(1\;\,mm\) by a force of \(1\,KN\). How far would a wire of the same material and length but of four times that diameter be stretched by the same force.
369876
Assertion : Lead is more elastic than rubber. Reason : If the same load is attached to lead and rubber wires of the same cross-sectional area lead has less strain (compared to rubber).
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but reason is correct.
Explanation:
\(Y=\dfrac{\text { Stress }}{\left(\Delta l / l_{0}\right)}\) For lead, \(Y = 16\,GPa\) For rubber, \(Y = 0.1\,GPa\). More the value of \(Y\), more elastic is material.Lead is more elastic than rubber in the sense that it undergoes less strain \(\left(=\Delta l / l_{0}\right)\) when subjected to the same stress. So correct option is (1).
PHXI09:MECHANICAL PROPERTIES OF SOLIDS
369877
Young's modulus of perfectly rigid body material is
369874
Two similar wires under the same load yield elongation of \(1.0\;\,mm\) and \(0.05\;\,mm\) respectively. If the area of cross-section of the first wire is \(4\;m{m^2}\) then the area of cross section of the second wire is
369875
A wire is stretched \(1\;\,mm\) by a force of \(1\,KN\). How far would a wire of the same material and length but of four times that diameter be stretched by the same force.
369876
Assertion : Lead is more elastic than rubber. Reason : If the same load is attached to lead and rubber wires of the same cross-sectional area lead has less strain (compared to rubber).
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but reason is correct.
Explanation:
\(Y=\dfrac{\text { Stress }}{\left(\Delta l / l_{0}\right)}\) For lead, \(Y = 16\,GPa\) For rubber, \(Y = 0.1\,GPa\). More the value of \(Y\), more elastic is material.Lead is more elastic than rubber in the sense that it undergoes less strain \(\left(=\Delta l / l_{0}\right)\) when subjected to the same stress. So correct option is (1).
PHXI09:MECHANICAL PROPERTIES OF SOLIDS
369877
Young's modulus of perfectly rigid body material is
