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NEET 2008
Exam
NEET
Year
2008
Subject
Physics
Chapter
Thermodynamics

NEET 2008 · Physics · Thermodynamics

If Q, E and W denote respectively the heat added, change in...

If Q,E\mathrm{Q}, \mathrm{E} and W\mathrm{W} denote respectively the heat added, change in internal energy and the work done in a closed cycle process, then

Options

  1. AQ=0\mathrm{Q}=0
  2. BW=0W=0
  3. CQ=W=0\mathrm{Q}=\mathrm{W}=0
  4. DE=0\mathrm{E}=0

Correct answer

D. E=0\mathrm{E}=0

Step-by-step solution

From the 1st 1^{\text{st }} law of thermodynamics, Q=E+WForcyclicprocess,\mathrm{Q}=\mathrm{E}+\mathrm{W} For cyclic process,E=0, \therefore Q=W \neq 0
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