Same chapter3 marksDifficulty: Medium
Distinguish between isothermal and adiabatic processes.
Heat and Thermodynamics
3 marksDifficulty: Medium
State the first law of thermodynamics and explain its terms.
Original Khojo Papers practice question — not from a past board paper.
Answer
The heat supplied to a system equals the increase in its internal energy plus the external work done by it: ΔQ = ΔU + ΔW. ΔQ is positive when heat is absorbed, ΔU is the change in the internal energy of the system and ΔW is the work done by the system on its surroundings.
No citable source has been recorded for this record. Treat it as practice material, not as fact.
Explanation
The law is a statement of the conservation of energy applied to heat.
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