1.

The internal energy of a solid also increases when heat is transferred to it from its surroundings. A 5 kg solid bar is heated at atmospheric pressure. Its temperature increases from 20^(@)C " to "70^@C . The linear expansion coefficient of solid bar is 1 xx 10^(-3)//KgC^@. The density of solid bar is 50 kg//m^3.The specific heat capacity of solid bar is 200 J//Kg C^@ The atmospheric pressure is 1xx10^(5)N//m^2 The heat transferred to be solid bar is

Answer»

49000 J
50000 J
50500 J
51000 J

ANSWER :B


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