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A steel rod of dimensions 4 xx 4cm^(2) i...

A steel rod of dimensions `4 xx 4cm^(2)` is tightly fixed between two supports and is not allowed to expand. It is heated through `2^(@) C`. Thermal stress developed is … `10^(6) N//m^(2) (Y=20 xx 10^(10) ) N//m^(2)`

A

`7.2`

B

`2.7`

C

`3.6`

D

`0.72`

Text Solution

Verified by Experts

The correct Answer is:
A
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