AP EAMCET202023 Sep 2020Morning ShiftPhysicsThermodynamicsActual
The first law of thermodynamics confirms the law of _____
Options
- AConservation of momentum of molecules
- BConservation of energy
- CFlow of heat in a particular direction
- DConservation of heat energy and mechanical energy
Correct answer
B. Conservation of energy
Step-by-step solution
The first law of thermodynamics states that the net work done upon the system over a complete cycle equal to heat transfer in that system or summation of heat and work over a complete cycle for a system is zero. In other words it tells that heat and work are interconvertible forms of energy. This way it can be related to law of conservation of energy which also states that energy never created or destroyed it only transforms from one to other form.