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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
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)`

Text Solution

Verified by Experts

The correct Answer is:
B
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