SSC JE Mechanical Engineering 2018 Set 5 Paper

Question : 122 of 200

Marks: +1, -0

What is the effect on the Young’s modulus of a wire, if the radius of a wire subjected to a load P is doubled?

Doubled
Halved
Become one – fourth
Remains unaffected

Solution:

Remains unaffected

E =\Stress/\Strain

, E always constant for every material it's a mechanical property of a material Modulus of elasticity depends upon stress and strain not on load.
If load can be change stress may change but strain also change.

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