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MHT CET202617 April 2026Morning ShiftChemistryThermodynamics (C)Actual

A system is provided 50 J of heat and work done on the system is 10 J. What is change in internal energy ?

Options

  1. A40 J
  2. B60 J
  3. C30 J
  4. D50 J

Correct answer

B. 60 J

Step-by-step solution

According to the first law of thermodynamics: U = q + w where q is the heat supplied to the system and w is the work done on the system. Given: q = +50 J (heat is provided to the system) w = +10 J (work is done on the system) Substituting the values: U = 50 + 10 = 60 J Answer: 60 J

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