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MHT CET202124 Sep 2021Evening ShiftChemistryThermodynamics (C)Actual

What is internal energy change when 62 ~J of work is done on the system and 128 ~J of heat is transferred to surrounding?

Options

  1. A-62 J
  2. B-190 J
  3. C-128 J
  4. D-66 J

Correct answer

D. -66 J

Step-by-step solution

Work done on the system =+62 ~J Heat released to the surrounding =-128 ~J From first law of thermodynamics, aligned & U = q + W & =-128+62 & =-66 ~J aligned

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