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QJEEM02Ch1b6b: JEE Main 2002 Chemistry - Class 11 JEEM02Ch1b6b Solution: A heat engine absorbs heat Q 1 at temperature T 1 and heat Q 2…

A heat engine absorbs heat Q1 at temperature T1 and heat Q2 at temperature T2. Work done by the engine is J (Q1 + Q2). This data :

Multiple Choice Options

  • A violates 1st law of thermodynamics
  • B violates 1st law of thermodynamics if Q1 is +ve
  • C violates 1st law of thermodynamics if Q1 is -ve
  • D does not violates 1st law of thermodynamics

Step-by-Step Verified Solution

According to first law of thermodynamics energy can neither be created nor destroyed although it can be converted from one form to another.

NOTE : Carnot cycle is based upon this principle but during the conversion of heat into work some mechanical energy is always converted to other form of energy hence this data violates 1 st. law of thermodynamics.

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