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There is a change in length when a 33000...

There is a change in length when a 33000 N tensile force is applied on a steel rod of area of cross - section `10^(-3)`. The change of temperature required to produce the same elongation, if the steel rod is heated, is (modulus of elasticity of steel `=3xx10^(11)N//m^(2)`, coefficient of linear expansion of steel `=1.1xx10^(-5)//^(@)C`........................

A

`20^(@)C`

B

`15^(@)C`

C

`10^(@)C`

D

`0^(@)C`

Text Solution

Verified by Experts

The correct Answer is:
c
`Deltal=alpha l Deltat=(Fl)/(AY)`
`Deltat=(Fl)/(alpha AY)=(33000)/(1.1xx10^(-5)xx10^(-3)xx3xx10^(11))rArr Deltat=10^(@)C`
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