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The initial state of a certain gas is (P_i,V_i,T_i). It undergoes expansion till its volume becomes V_f Consider the following two cases : (a) the expansion takes place at constant temperature. (b) the expansion takes place at constant pressure. Plot the P-V diagram for each case. In which of the two cases, is the work done by the gas more ?

Answer» <html><body><p></p>Solution :The situation is shown in the <a href="https://interviewquestions.tuteehub.com/tag/given-473447" style="font-weight:bold;" target="_blank" title="Click to know more about GIVEN">GIVEN</a> P `to`V graph where variation is shown for each <a href="https://interviewquestions.tuteehub.com/tag/process-11618" style="font-weight:bold;" target="_blank" title="Click to know more about PROCESS">PROCESS</a>. <br/> <img src="https://d10lpgp6xz60nq.cloudfront.net/physics_images/KPK_AIO_PHY_XI_P2_C12_E04_022_S01.png" width="80%"/> <br/> Process 1 is isobaric and process 2 is isothermal. <a href="https://interviewquestions.tuteehub.com/tag/since-644476" style="font-weight:bold;" target="_blank" title="Click to know more about SINCE">SINCE</a> work done is <a href="https://interviewquestions.tuteehub.com/tag/equal-446400" style="font-weight:bold;" target="_blank" title="Click to know more about EQUAL">EQUAL</a> to the area under the P`to`V <a href="https://interviewquestions.tuteehub.com/tag/curve-941741" style="font-weight:bold;" target="_blank" title="Click to know more about CURVE">CURVE</a>, here area under the P `to`V curve 1 is more, so work done is more in isobaric process.</body></html>


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