Physics-
General
Easy

Question

An ideal gas is taken from state 1 to state 2 through optional path A, B, C & D as shown in P-V diagram. Let Q, W and U represent the heat supplied, work done & internal energy of the gas respectively. Then

  1. QB – WB > QC – WC    
  2. QA – QD = WA – WD    
  3. WA < WB < WC < WD    
  4. QA > QB > QC > QD    

The correct answer is: QA – QD = WA – WD

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