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The young's modulus of a material of wir...

The young's modulus of a material of wire is `12.6 xx 10^(11) "dyne"//cm^(2)`. Its value is `MKS` system is

A

`12.6 xx 10^(12) N//m^(2)`

B

`12.6 xx 10^(10) N//m^(2)`

C

`12.6 xx 10^(6) N//m^(2)`

D

`12.6 xx 10^(8) N//m^(2)`

Text Solution

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The correct Answer is:
B
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Knowledge Check

  • The Young's modulus of the material of a wire is equal ot the

    A
    stress required to increase its length four times
    B
    stress required to produce unit strain
    C
    strain produced in it
    D
    half the strain produced in it

  • The length of a rod is 20 cm and area of cross-section 2 cm^(2) . The Young's modulus of the material of wire is 1.4 xx 10^(11) N//m^(2) . If the rod is compressed by 5 kg-wt along its length, then increase in the energy of the rod in joules will be

    A
    `8.57 xx 10^(-6)`
    B
    `22.5 xx 10^(-4)`
    C
    `9.8 xx 10^(-5)`
    D
    `45.0 xx 10^(-5)`

  • The Young's modulus of the material of a wire is 6 xx 10^(12) N//m^(2) and there is no transverse strain in it.then it modulus of rigidity will be

    A
    `3 xx 10^(12) N//m^(2)`
    B
    `2 xx 10^(12) N//m^(2)`
    C
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    D
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