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A rod of length 1000 mm and co-efficien...

A rod of length `1000 ` `mm` and co-efficient of linear expansion `alpha = 10^(-4)` per degree celsius is placed in horizontal smooth surface symmetrically between fixed walls separated by `1001` ` mm `. The young's modulus of rod is `10^(11)N//m^(2)`. If the temperature is increased by `20^@C`, then the stress developed in the rod is (in ` N//m^(2)`)

A

10

B

`10^(8)`

C

`2xx10^(8)`

D

cannot be calculated

Text Solution

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The correct Answer is:
B
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