Question
A system is provided 50 J of heat and work done on the system is 10 J. What is change in internal energy ?
MHT CET
Chemistry
Thermodynamics (C)
2026
MHT CET 2026 (17 April Shift 1)
MHT CET Chemistry Question (2026) — Solution
Options
- A. 40 J
- B. 60 J
- C. 30 J
- D. 50 J
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
Related: Chemistry — Thermodynamics (C) · All PYQ Banks