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Passage - I: A rod of length 2m is at ...

Passage - I:
A rod of length 2m is at a temperature of `20^(@) C`. Find the free expansion of the rod, if the temperature is increased to 50°C, then find stress produced when the rod is
Fully prevented to expand

A

`9 xx 10^(7) N//m^(2)`

B

`18 xx 10^(7) N//m^(2)`

C

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

D

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

Text Solution

Verified by Experts

The correct Answer is:
A
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Knowledge Check

  • Passage - I: A rod of length 2m is at a temperature of 20^(@) C . Find the free expansion of the rod, if the temperature is increased to 50°C, then find stress produced when the rod is Permitted to expand by 0.4 mm. Y= 2 xx 10^( 11) N//m^(2) , alpha = 15 xx 10^(-6) //^(@) C

    A
    `7 xx 10^(7) N//m^(2)`
    B
    `5 xx 10^(7) N//m^(2)`
    C
    `7 xx 10^(8) N//m^(2)`
    D
    `5 xx 10^(8) N//m^(2)`

  • Passage - I: A rod of length 2m is at a temperature of 20^(@) C . Find the free expansion of the rod, if the temperature is increased to 50°C, then find stress produced when the rod is Stress produced when the rod is free

    A
    `9 xx 10^(7) N//m^(2)`
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  • The ends of a metal rod of length 40 cm are maintained at temperatures 100°C and 20°C respectively. At steady state condition, the temperature at a point at a distance 30 cm from the hot end of the rod is

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    C
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