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JIPMER 2004
Exam
JIPMER
Year
2004
Subject
Physics
Chapter
Thermodynamics

JIPMER 2004 · Physics · Thermodynamics

If the heat of 110 J is added to a gaseous system, whose internal...

If the heat of 110 J is added to a gaseous system, whose internal energy is 40 J , then the amount of external work done is

Options

  1. A180 J
  2. B70 J
  3. C110 J
  4. D30 J

Correct answer

B. 70 J

Step-by-step solution

Heat added to the system ΔQ=110 J\Delta Q=110 \mathrm{~J} Internal energy Δu=40 J\Delta u=40 \mathrm{~J} External work done is given by ΔW=ΔQ−Δu=110−40=70 J\Delta W=\Delta Q-\Delta u=110-40=70 \mathrm{~J}
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