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MHT-CET : Physics Entrance Exam

MHT - CET : Physics - Thermodynamics Know More

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1. Work is related to area in a P-V diagram. The work done by a system in an expansion is equal to the area under the curve on a P-V diagram.
In a cyclic process, the work done by a system, is equal to the area enclosed by the P-V diagram which represents the process.

The work done in the cyclic process in which a system passes through states A, B, C, D and returns to state A is given by the area enclosed by the curve ABCDA.

2. The Efficiency of a Heat Engine
The efficiency of a heat engine (n) is defined as

n =

The Carnot cycle is the most efficient cycle for a heat engine. It operates between a source of heat at temperature T2 and a sink at temperature T1. Its efficiency is given by

n =

3. Conversion of Temperature from Celcius to Farenheit Scale

TF =

TC + 32

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