TS EAMCET · Physics · Thermodynamics
A gas is at constant pressure \(4 \times 10^5 \mathrm{~N} / \mathrm{m}^2\). When a heat energy of \(2000 \mathrm{~J}\) is supplied to the gas, its volume changes by \(3 \times 10^{-3} \mathrm{~m}^3\). What is the increase in its internal energy?
- A \(650 \mathrm{~J}\)
- B \(900 \mathrm{~J}\)
- C \(800 \mathrm{~J}\)
- D \(400 \mathrm{~J}\)
Answer & Solution
Correct Answer
(C) \(800 \mathrm{~J}\)
Step-by-step Solution
Detailed explanation
Given, pressure, \(p=4 \times 10^5 \mathrm{~N} / \mathrm{m}^2, \Delta Q=2000 \mathrm{~J}\) Change in volume, \(\Delta V=3 \times 10^{-3} \mathrm{~m}^3\) Now, the work done to change volume is…
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