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 steel rod of dimensions 4 xx 4cm^(2) is tightly fixed between two su

1.	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)
Answer» `7.2` `2.7` `3.6` `0.72` ANSWER :A