AP EAMCET · PHYSICS · Thermodynamics
In a thermodynamic process pressure of a fixed mass of a gas is changed in such a manner that the gas releases \(30 \mathrm{~J}\) of heat and \(10 \mathrm{~J}\) of work was done on the gas. If the initial internal energy of the gas was \(10 \mathrm{~J}\), then the final internal energy will be
- A \(2 \mathrm{~J}\)
- B \(-18 \mathrm{~J}\)
- C \(10 \mathrm{~J}\)
- D \(58 \mathrm{~J}\)
Answer & Solution
Correct Answer
(C) \(10 \mathrm{~J}\)
Step-by-step Solution
Detailed explanation
Given, heat, \(Q=-30 \mathrm{~J}\) Work done on the gas, \(W=-10 \mathrm{~J}\) Initial internal energy, \(U_i=-10 \mathrm{~J}\) Final internal energy, \(U_f=\) ? According to first law of thermodynamics,…
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